[TD-6127]<feature> one taos driver connect two cluster

src/client/src/tscParseLineProtocol.c

@@ -605,10 +605,10 @@ static int32_t retrieveTableMeta(TAOS* taos, char* tableName, STableMeta** pTabl
     char fullTableName[TSDB_TABLE_FNAME_LEN] = {0};
     memset(fullTableName, 0, tListLen(fullTableName));
     tNameExtractFullName(&sname, fullTableName);
-    tscFreeRegisteredSqlObj(pSql);
 
     size_t size = 0;
     taosHashGetCloneExt(UTIL_GET_TABLEMETA(pSql), fullTableName, strlen(fullTableName), NULL, (void**)&tableMeta, &size);
+    tscFreeRegisteredSqlObj(pSql);
   }
 
   if (tableMeta != NULL) {

src/client/src/tscSql.c

@@ -257,6 +257,7 @@ static void asyncConnCallback(void *param, TAOS_RES *tres, int code) {
   SSqlObj *pSql = (SSqlObj *) tres;
   assert(pSql != NULL);
   
+  pSql->pTscObj->pClusterInfo = (SClusterInfo *)tscAcquireClusterInfo(pSql->pTscObj->clusterId);
   pSql->fetchFp(pSql->param, tres, code);
 }
 
@@ -269,7 +270,6 @@ TAOS *taos_connect_a(char *ip, char *user, char *pass, char *db, uint16_t port,
   }
 
   if (taos) *taos = pObj;
-
   pSql->fetchFp = fp;
   pSql->res.code = tscBuildAndSendRequest(pSql, NULL);
   tscDebug("%p DB async connection is opening", taos);