[pygobject] Fix memory leak in _pygi_argument_to_object()

[Martin Pitt <martinpitt src gnome org>]

commit 65bfbc624bc9da6e18ff2945b14099ab8eeb7601
Author: Alban Browaeys <prahal yahoo com>
Date:   Wed Aug 29 21:24:17 2012 +0200

    Fix memory leak in _pygi_argument_to_object()
    
    Avoid leaking the item_type_info when breaking out of the
    switch in _pygi_argument_to_object() for unmarshalling arrays.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=682979

 gi/pygi-argument.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gi/pygi-argument.c b/gi/pygi-argument.c
index 3527002..1560556 100644
--- a/gi/pygi-argument.c
+++ b/gi/pygi-argument.c
@@ -1681,20 +1681,24 @@ _pygi_argument_to_object (GIArgument  *arg,
                 /* Return as a byte array */
                 if (arg->v_pointer == NULL) {
                     object = PYGLIB_PyBytes_FromString ("");
+                    g_base_info_unref ( (GIBaseInfo *) item_type_info);
                     break;
                 }
 
                 object = PYGLIB_PyBytes_FromStringAndSize(array->data, array->len);
+                g_base_info_unref ( (GIBaseInfo *) item_type_info);
                 break;
 
             } else {
                 if (arg->v_pointer == NULL) {
                     object = PyList_New (0);
+                    g_base_info_unref ( (GIBaseInfo *) item_type_info);
                     break;
                 }
 
                 object = PyList_New (array->len);
                 if (object == NULL) {
+                    g_base_info_unref ( (GIBaseInfo *) item_type_info);
                     break;
                 }