[gegl] GeglNode: Don't invalidate the source when connecting two nodes

[Debarshi Ray <debarshir src gnome org>]

commit 38ec4ac246039a7b870fd7e121b57d22d274ba97
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Feb 3 13:38:35 2016 +0100

    GeglNode: Don't invalidate the source when connecting two nodes
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761495

 gegl/graph/gegl-node.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/graph/gegl-node.c b/gegl/graph/gegl-node.c
index bf76c02..c4f778d 100644
--- a/gegl/graph/gegl-node.c
+++ b/gegl/graph/gegl-node.c
@@ -756,7 +756,7 @@ gegl_node_connect_from (GeglNode    *sink,
       g_signal_connect (G_OBJECT (real_source), "invalidated",
                         G_CALLBACK (gegl_node_source_invalidated), sink_pad);
 
-      gegl_node_property_changed (G_OBJECT (real_source->operation), NULL, real_source);
+      gegl_node_source_invalidated (real_source, &real_source->have_rect, sink_pad);
 
       return TRUE;
     }