Don't pass a negative value to __redisAsyncCommand if redisFormatSdsCommandArgv fails
@@ -676,6 +676,8 @@ int redisAsyncCommandArgv(redisAsyncContext *ac, redisCallbackFn *fn, void *priv
int len;
int status;
len = redisFormatSdsCommandArgv(&cmd,argc,argv,argvlen);
+ if (len < 0)
+ return REDIS_ERR;
status = __redisAsyncCommand(ac,fn,privdata,cmd,len);
sdsfree(cmd);
return status;
