earlier exit when an exception is raised

Author: devnexen

ext/sysvmsg/sysvmsg.c

@@ -371,12 +371,17 @@ PHP_FUNCTION(msg_send)
 		php_var_serialize(&msg_var, message, &var_hash);
 		PHP_VAR_SERIALIZE_DESTROY(var_hash);
 
-		message_len = smart_str_get_len(&msg_var);
+		if (UNEXPECTED(EG(exception))) {
+			smart_str_free(&msg_var);
+			RETURN_FALSE;
+		}
+
 
+		zend_string *str = smart_str_extract(&msg_var);
+		message_len = ZSTR_LEN(str);
 		/* NB: php_msgbuf is 1 char bigger than a long, so there is no need to
 		 * allocate the extra byte. */
 		messagebuffer = safe_emalloc(message_len, 1, sizeof(struct php_msgbuf));
-		zend_string *str = smart_str_extract(&msg_var);
 		memcpy(messagebuffer->mtext, ZSTR_VAL(str), message_len + 1);
 		zend_string_release(str);
 		smart_str_free(&msg_var);