Dupli-Group fix: when using multiple instances of groups, with groups on

different layers, the layer flags of objects got mixed up on selection.

This caused groups to become unselectable or uneditable, also the original
group...

source/blender/src/view.c

@@ -1056,7 +1056,7 @@ short  view3d_opengl_select(unsigned int *buffer, unsigned int bufsize, short x1
 						
 						Mat4CpyMat4(dob->ob->obmat, dob->omat);
 					}
-					BLI_freelistN(lb);
+					free_object_duplilist(lb);
 				}
 				
 				code++;