[gcompris] Fix building with gcc-4.5

[Bruno Coudoin <bcoudoin src gnome org>]

commit f01fa9212586558319fdfe33c0724214a8572380
Author: Aleksey Lim <alsroot sugarlabs org>
Date:   Sat Sep 24 17:07:38 2011 +0000

    Fix building with gcc-4.5

 src/boards/py-mod-gcompris.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/boards/py-mod-gcompris.c b/src/boards/py-mod-gcompris.c
index bb8a80b..a8eb32f 100644
--- a/src/boards/py-mod-gcompris.c
+++ b/src/boards/py-mod-gcompris.c
@@ -1141,7 +1141,9 @@ py_gc_board_config_window_display(PyObject* self, PyObject* args){
     }
 
   if (pyGcomprisConfCallbackFunc)
-    Py_DECREF(pyGcomprisConfCallbackFunc);
+    {
+      Py_DECREF(pyGcomprisConfCallbackFunc);
+    }
 
   pyGcomprisConfCallbackFunc = pyCallback;