[gimp] Bug 724338: free the GimpImageFile's icon when its contents is updated.

[Jehan Pagès <jehanp src gnome org>]

commit 6af7f47238a55a09b63c601fec5bda77cf2ab5d3
Author: Jehan <jehan girinstud io>
Date:   Fri Feb 14 15:50:56 2014 +1300

    Bug 724338: free the GimpImageFile's icon when its contents is updated.
    
    The main consequence was that file icons were stuck to the first
    filetype's icon selected in file dialogs.

 app/core/gimpimagefile.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimpimagefile.c b/app/core/gimpimagefile.c
index 643c5fb..f39459e 100644
--- a/app/core/gimpimagefile.c
+++ b/app/core/gimpimagefile.c
@@ -595,6 +595,11 @@ gimp_imagefile_info_changed (GimpImagefile *imagefile)
 
       private->description = NULL;
     }
+  if (private->icon)
+    {
+      g_object_unref (GET_PRIVATE (imagefile)->icon);
+      private->icon = NULL;
+    }
 
   g_signal_emit (imagefile, gimp_imagefile_signals[INFO_CHANGED], 0);
 }