[gobject-introspection] g_object_info_find_method_using_interfaces: Fix crash if not found

[Colin Walters <walters src gnome org>]

commit 10b88acfd4df8204fbc0763b5c8c90587c7c9a79
Author: Colin Walters <walters verbum org>
Date:   Mon Dec 6 11:14:53 2010 -0500

    g_object_info_find_method_using_interfaces: Fix crash if not found
    
    If a method wasn't found, we'd try to unref NULL.

 girepository/giobjectinfo.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/girepository/giobjectinfo.c b/girepository/giobjectinfo.c
index d6bdce6..fbf5d8a 100644
--- a/girepository/giobjectinfo.c
+++ b/girepository/giobjectinfo.c
@@ -465,7 +465,7 @@ g_object_info_find_method_using_interfaces (GIObjectInfo  *info,
     }
   if (implementor)
     *implementor = implementor_result;
-  else
+  else if (implementor_result != NULL)
     g_base_info_unref ((GIBaseInfo*) implementor_result);
   return result;
 }