combine() must have /Factory/ annotation!

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9525 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

python/core/qgsgeometry.sip

@@ -233,7 +233,7 @@ not disjoint with existing polygons of the feature*/
     /** Returns a geometry representing all the points in this geometry and other (a 
      * union geometry operation). 
      * @note this operation is not called union since its a reserved word in C++.*/
-    QgsGeometry* combine( QgsGeometry* geometry );
+    QgsGeometry* combine( QgsGeometry* geometry ) /Factory/;
 
     /** Returns a geometry representing the points making up this geometry that do not make up other. */
     QgsGeometry* difference(QgsGeometry* geometry) /Factory/;