MFB: fix possible segfault

diff --git a/ext/filter/callback_filter.c b/ext/filter/callback_filter.c
index a825a5dc38269bec9b3a4b7585712f49be4e2171..fd8ed2d4cd2b25525a22a554a299a54dcd7f88a7 100644 (file)
--- a/ext/filter/callback_filter.c
+++ b/ext/filter/callback_filter.c
@@ -42,15 +42,14 @@ void php_filter_callback(PHP_INPUT_FILTER_PARAM_DECL)
                if (retval_ptr != value) {
                        zval_dtor(value);
                        COPY_PZVAL_TO_ZVAL(*value, retval_ptr);
+               } else {
+                       zval_ptr_dtor(&retval_ptr);
                }
        } else {
                zval_dtor(value);
                Z_TYPE_P(value) = IS_NULL;
        }
 
-       if (retval_ptr) {
-               zval_ptr_dtor(&retval_ptr);
-       }
        efree(args);
 }