Merge pull request #3854 from taosdata/hotfix/TD-1711

[TD-1711]<fix>: func taos_validate_sql cause deadlocked

src/client/src/tscSql.c

@@ -844,6 +844,8 @@ int taos_validate_sql(TAOS *taos, const char *sql) {
   pSql->fp = asyncCallback;
   pSql->fetchFp = asyncCallback;
   pSql->param = pSql;
+
+  registerSqlObj(pSql);
   int code = tsParseSql(pSql, true);
   if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
     tsem_wait(&pSql->rspSem);