Fix memory leaks

Author: nyalldawson

src/core/qgsgml.cpp

@@ -474,6 +474,7 @@ void QgsGml::endElement( const XML_Char* el )
       else
       {
         QgsDebugMsg( "no wkb fragments" );
+        delete [] wkb;
       }
     }
   }

src/plugins/dxf2shp_converter/dxf2shpconvertergui.cpp

@@ -78,6 +78,7 @@ void dxf2shpConverterGui::on_buttonBox_accepted()
   {
     // if file open failed
     QgsDebugMsg( "Aborting: The input file could not be opened." );
+    delete dxf_inserts;
     return;
   }