[gimp] cagetool: fix buffer leak

[Michael Muré <mmure src gnome org>]

commit 7f6d06d3e9338621d3e7fad7cd17e74d6635aa54
Author: Michael Muré <batolettre gmail com>
Date:   Tue Apr 5 10:18:07 2011 +0200

    cagetool: fix buffer leak

 app/tools/gimpcagetool.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/app/tools/gimpcagetool.c b/app/tools/gimpcagetool.c
index 25ae04b..d8d8201 100644
--- a/app/tools/gimpcagetool.c
+++ b/app/tools/gimpcagetool.c
@@ -1148,6 +1148,12 @@ gimp_cage_tool_render_node_update (GimpCageTool *ct)
                      "buffer",  ct->coef,
                      NULL);
     }
+
+  /* This just unref buffer, since gegl_node_get add a refcount on it */
+  if (buffer)
+    {
+      gegl_buffer_destroy (buffer);
+    }
 }
 
 static void