Cleanup debug_backtrace_get_args

Author: TimWolla

Zend/zend_builtin_functions.c

@@ -1613,9 +1613,10 @@ static void debug_backtrace_get_args(zend_execute_data *call, zval *arg_array) /
 						}
 
 						if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
-							ZVAL_DEREF(p);
-							Z_TRY_ADDREF_P(p);
-							arg = *p;
+							zval *old_arg = p;
+							ZVAL_DEREF(old_arg);
+							Z_TRY_ADDREF_P(old_arg);
+							arg = *old_arg;
 						} else {
 							ZVAL_NULL(&arg);
 						}
@@ -1659,9 +1660,10 @@ static void debug_backtrace_get_args(zend_execute_data *call, zval *arg_array) /
 
 
 				if (EXPECTED(Z_TYPE_INFO_P(p) != IS_UNDEF)) {
-					ZVAL_DEREF(p);
-					Z_TRY_ADDREF_P(p);
-					arg = *p;
+					zval *old_arg = p;
+					ZVAL_DEREF(old_arg);
+					Z_TRY_ADDREF_P(old_arg);
+					arg = *old_arg;
 				} else {
 					ZVAL_NULL(&arg);
 				}