earlier exit when an exception is raised

Author: devnexen

ext/sysvmsg/sysvmsg.c

@@ -371,6 +371,11 @@ PHP_FUNCTION(msg_send)
 		php_var_serialize(&msg_var, message, &var_hash);
 		PHP_VAR_SERIALIZE_DESTROY(var_hash);
 
+		if (UNEXPECTED(EG(exception))) {
+			smart_str_free(&msg_var);
+			RETURN_FALSE;
+		}
+
 		message_len = smart_str_get_len(&msg_var);
 
 		/* NB: php_msgbuf is 1 char bigger than a long, so there is no need to