Fix for bug #1738, duplicated objects in composer

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@10964 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/qgisapp.cpp

@@ -3341,6 +3341,10 @@ bool QgisApp::addProject( QString projectFile )
   // clear the map canvas
   removeAllLayers();
 
+  //clear the composer
+  delete mComposer;
+  mComposer = new QgsComposer(this);
+
   try
   {
     if ( QgsProject::instance()->read( projectFile ) )