Apply patch in ticket #365.

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@6043 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: g_j_m

src/plugins/grass/qgsgrassmapcalc.cpp

@@ -147,6 +147,7 @@ QgsGrassMapcalc::QgsGrassMapcalc (
     mActionDeleteItem = new QAction( QIcon(myIconPath+"mapcalc_delete.png"), 
                         tr("Delete selected item"), this);
     mActionDeleteItem->setCheckable ( true );
+    mActionDeleteItem->setEnabled ( false );
     ag->addAction ( mActionDeleteItem );
     tb->addAction ( mActionDeleteItem );
     connect ( mActionDeleteItem, SIGNAL(triggered()), this, SLOT(deleteItem()) );
@@ -798,6 +799,7 @@ void QgsGrassMapcalc::setTool( int tool )
 
     showOptions(mTool);
     setToolActionsOff(); 
+    mActionDeleteItem->setEnabled( false );
     mCanvas->update();
 }