fix for crash in mapsetChanged()

git-svn-id: http://svn.osgeo.org/qgis/trunk@5207 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: rblazek

src/plugins/grass/qgsgrassplugin.cpp

@@ -244,7 +244,7 @@ void QgsGrassPlugin::mapsetChanged ()
         mOpenToolsAction->setEnabled(false);
 	mRegionAction->setEnabled(false);
 	mEditRegionAction->setEnabled(false);
-        mRegion->hide();
+        mRegionBand->hide();
         mCloseMapsetAction->setEnabled(false);
         mNewVectorAction->setEnabled(false);