[glade] Only update project if the project has indeed changed.

[Tristan Van Berkom <tvb src gnome org>]

commit b817dc24190dbc8d3b1e7429de63143286bde40e
Author: Marco Diego Aurélio Mesquita <marcodiegomesquita gmail com>
Date:   Mon Jun 17 10:48:27 2013 -0300

    Only update project if the project has indeed changed.

 gladeui/glade-inspector.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gladeui/glade-inspector.c b/gladeui/glade-inspector.c
index 3740eab..67f08bc 100644
--- a/gladeui/glade-inspector.c
+++ b/gladeui/glade-inspector.c
@@ -994,6 +994,9 @@ glade_inspector_set_project (GladeInspector *inspector, GladeProject *project)
 
   GladeInspectorPrivate *priv = inspector->priv;
 
+  if(priv->project == project)
+    return;
+
   if (inspector->priv->project)
     {
       disconnect_project_signals (inspector, inspector->priv->project);