Fixes error with union function

git-svn-id: http://svn.osgeo.org/qgis/trunk@10420 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: cfarmer

python/plugins/fTools/tools/doGeoprocessing.py

@@ -605,8 +605,9 @@ def union( self ):
 					try:
 						if geom.intersects( tmpGeom ):
 							found = True
-							diff_geom = QgsGeometry( diff_geom.difference( tmpGeom ) )
+							diff_geom = QgsGeometry( geom.difference( tmpGeom ) )#
 							int_geom = QgsGeometry( geom.intersection( tmpGeom ) )
+							print "found"
 							if int_geom.wkbType() == 7:
 								int_com = geom.combine( tmpGeom )
 								int_sym = geom.symDifference( tmpGeom )