Coverity fixes

Author: nyalldawson

src/app/qgsvectorlayerproperties.cpp

@@ -74,7 +74,14 @@ QgsVectorLayerProperties::QgsVectorLayerProperties(
     : QgsOptionsDialogBase( "VectorLayerProperties", parent, fl )
     , layer( lyr )
     , mMetadataFilled( false )
+    , mSaveAsMenu( 0 )
+    , mLoadStyleMenu( 0 )
     , mRendererDialog( 0 )
+    , labelingDialog( 0 )
+    , labelDialog( 0 )
+    , actionDialog( 0 )
+    , diagramPropertiesDialog( 0 )
+    , mFieldsPropertiesDialog( 0 )
 {
   setupUi( this );
   // QgsOptionsDialogBase handles saving/restoring of geometry, splitter and current tab states,

src/core/gps/qextserialport/posix_qextserialport.cpp

@@ -663,11 +663,11 @@ void QextSerialPort::setTimeout(long millisec)
     Posix_Copy_Timeout.tv_usec = millisec % 1000;
     if (isOpen()) {
         if (millisec == -1)
-            fcntl(fd, F_SETFL, O_NDELAY);
+            (void)fcntl(fd, F_SETFL, O_NDELAY);
         else
             //O_SYNC should enable blocking ::write()
             //however this seems not working on Linux 2.6.21 (works on OpenBSD 4.2)
-            fcntl(fd, F_SETFL, O_SYNC);
+            (void)fcntl(fd, F_SETFL, O_SYNC);
         tcgetattr(fd, & Posix_CommConfig);
         Posix_CommConfig.c_cc[VTIME] = millisec/100;
         tcsetattr(fd, TCSAFLUSH, & Posix_CommConfig);

src/plugins/grass/qgsgrassnewmapset.cpp

@@ -1263,7 +1263,13 @@ void QgsGrassNewMapset::createMapset()
 
     // TODO: add QgsGrass::setLocation or G_make_location with
     //       database path
-    QgsGrass::activeMode(); // because it calls private QgsGrass::init()
+    if ( !QgsGrass::activeMode() ) // because it calls private QgsGrass::init()
+    {
+      QMessageBox::warning( this, tr( "Create mapset" ),
+                            tr( "Cannot activate grass" ) );
+      return;
+    }
+
 #if defined(WIN32)
     G__setenv(( char * ) "GISDBASE", QgsGrass::shortPath( mDatabaseLineEdit->text() ).toUtf8().data() );
 #else

src/plugins/grass/qtermwidget/Pty.cpp

@@ -226,9 +226,9 @@ void Pty::setWriteable( bool writeable )
   struct stat sbuf;
   stat( pty()->ttyName(), &sbuf );
   if ( writeable )
-    chmod( pty()->ttyName(), sbuf.st_mode | S_IWGRP );
+    (void)chmod( pty()->ttyName(), sbuf.st_mode | S_IWGRP );
   else
-    chmod( pty()->ttyName(), sbuf.st_mode & ~( S_IWGRP | S_IWOTH ) );
+    (void)chmod( pty()->ttyName(), sbuf.st_mode & ~( S_IWGRP | S_IWOTH ) );
 }
 
 Pty::Pty()

src/plugins/grass/qtermwidget/k3process.cpp

@@ -317,7 +317,7 @@ bool K3Process::start( RunMode runmode, Communication comm )
 
     close( fd[0] );
     // Closing of fd[1] indicates that the execvp() succeeded!
-    fcntl( fd[1], F_SETFD, FD_CLOEXEC );
+    (void)fcntl( fd[1], F_SETFD, FD_CLOEXEC );
 
     if ( !commSetupDoneC() )
       qDebug() << "Could not finish comm setup in child!" << endl;
@@ -874,15 +874,15 @@ int K3Process::setupCommunication( Communication comm )
   {
     if ( socketpair( AF_UNIX, SOCK_STREAM, 0, out ) )
       goto fail1;
-    fcntl( out[0], F_SETFD, FD_CLOEXEC );
-    fcntl( out[1], F_SETFD, FD_CLOEXEC );
+    (void)fcntl( out[0], F_SETFD, FD_CLOEXEC );
+    (void)fcntl( out[1], F_SETFD, FD_CLOEXEC );
   }
   if ( comm & Stderr )
   {
     if ( socketpair( AF_UNIX, SOCK_STREAM, 0, err ) )
       goto fail2;
-    fcntl( err[0], F_SETFD, FD_CLOEXEC );
-    fcntl( err[1], F_SETFD, FD_CLOEXEC );
+    (void)fcntl( err[0], F_SETFD, FD_CLOEXEC );
+    (void)fcntl( err[1], F_SETFD, FD_CLOEXEC );
   }
   return 1; // Ok
 fail2:
@@ -923,7 +923,7 @@ int K3Process::commSetupDoneP()
 
   if ( communication & Stdin )
   {
-    fcntl( in[1], F_SETFL, O_NONBLOCK | fcntl( in[1], F_GETFL ) );
+    (void)fcntl( in[1], F_SETFL, O_NONBLOCK | fcntl( in[1], F_GETFL ) );
     innot =  new QSocketNotifier( in[1], QSocketNotifier::Write, this );
     Q_CHECK_PTR( innot );
     innot->setEnabled( false ); // will be enabled when data has to be sent

src/plugins/grass/qtermwidget/k3processcontroller.cpp

@@ -105,10 +105,10 @@ K3ProcessController::K3ProcessController()
     abort();
   }
 
-  fcntl( d->fd[0], F_SETFL, O_NONBLOCK ); // in case slotDoHousekeeping is called without polling first
-  fcntl( d->fd[1], F_SETFL, O_NONBLOCK ); // in case it fills up
-  fcntl( d->fd[0], F_SETFD, FD_CLOEXEC );
-  fcntl( d->fd[1], F_SETFD, FD_CLOEXEC );
+  (void)fcntl( d->fd[0], F_SETFL, O_NONBLOCK ); // in case slotDoHousekeeping is called without polling first
+  (void)fcntl( d->fd[1], F_SETFL, O_NONBLOCK ); // in case it fills up
+  (void)fcntl( d->fd[0], F_SETFD, FD_CLOEXEC );
+  (void)fcntl( d->fd[1], F_SETFD, FD_CLOEXEC );
 
   d->notifier = new QSocketNotifier( d->fd[0], QSocketNotifier::Read );
   d->notifier->setEnabled( true );

src/plugins/grass/qtermwidget/kpty.cpp

@@ -370,8 +370,8 @@ bool KPty::open()
 
 //#endif /* HAVE_OPENPTY */
 
-  fcntl( d->masterFd, F_SETFD, FD_CLOEXEC );
-  fcntl( d->slaveFd, F_SETFD, FD_CLOEXEC );
+  (void)fcntl( d->masterFd, F_SETFD, FD_CLOEXEC );
+  (void)fcntl( d->slaveFd, F_SETFD, FD_CLOEXEC );
 
   return true;
 }
@@ -403,12 +403,12 @@ void KPty::close()
       {
         if( chown( d->ttyName.data(), 0, st.st_gid == getgid() ? 0 : -1 ) < 0 )
           perror( "chown" );
-        chmod( d->ttyName.data(), S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH );
+        (void)chmod( d->ttyName.data(), S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH );
       }
     }
     else
     {
-      fcntl( d->masterFd, F_SETFD, 0 );
+      (void)fcntl( d->masterFd, F_SETFD, 0 );
       d->chownpty( false );
     }
   }

src/providers/grass/qgsgrass.cpp

@@ -1208,7 +1208,12 @@ bool GRASS_LIB_EXPORT QgsGrass::mapRegion( int type, QString gisbase,
   else if ( type == Vector )
   {
     // Get current projection
-    region( gisbase, location, mapset, window );
+    if ( !region( gisbase, location, mapset, window ) )
+    {
+      QMessageBox::warning( 0, QObject::tr( "Warning" ),
+                            QObject::tr( "Cannot read vector map region" ) );
+      return false;
+    }
 
     struct Map_info Map;