fix: road graph not clean GUI when unload

git-svn-id: http://svn.osgeo.org/qgis/trunk@15334 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: stopa85

src/plugins/roadgraph/roadgraphplugin.cpp

@@ -137,6 +137,7 @@ void RoadGraphPlugin::unload()
   // remove the GUI
   mQGisIface->removePluginMenu( tr( "Road graph" ), mQSettingsAction );
   mQGisIface->removePluginMenu( tr( "Road graph" ), mQShowDirectionAction );
+  mQGisIface->removePluginMenu( tr( "Road graph" ), mInfoAction );
 
   mQGisIface->removeToolBarIcon( mQShowDirectionAction );