subtract first, then retrieve value

diff --git a/json_object.c b/json_object.c
index eae0f8a8b1606cf3c57a641f9cd65db3f65f757c..b7ca93b35c34e337593fe782de6e40becb020d8b 100644 (file)
--- a/json_object.c
+++ b/json_object.c
@@ -176,7 +176,7 @@ int json_object_put(struct json_object *jso)
        if(!jso) return 0;
 
 #if defined __GNUC__
-       if (__sync_fetch_and_sub(&jso->_ref_count, 1) > 0) return 0;
+       if (__sync_sub_and_fetch(&jso->_ref_count, 1) > 0) return 0;
 #else
        if (--jso->_ref_count > 0) return 0;
 #endif