QSvgGenerator::setTitle only available with Qt >=4.5

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@11738 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/app/composer/qgscomposer.cpp

@@ -747,7 +747,9 @@ void QgsComposer::on_mActionExportAsSVG_triggered()
   mComposition->setPlotStyle( QgsComposition::Print );
 
   QSvgGenerator generator;
+#if QT_VERSION >= 0x040500
   generator.setTitle( QgsProject::instance()->title() );
+#endif
   generator.setFileName( myOutputFileNameQString );
   //width in pixel
   int width = ( int )( mComposition->paperWidth() * mComposition->printResolution() / 25.4 );