fix mem leak

src/client/src/tscUtil.c

@@ -1304,7 +1304,7 @@ void tscResetSqlCmd(SSqlCmd* pCmd, bool clearCachedMeta) {
   if (pCmd->pTableMetaMap != NULL) {
     STableMetaVgroupInfo* p = taosHashIterate(pCmd->pTableMetaMap, NULL);
     while (p) {
-      tfree(p->pVgroupInfo);
+      tscVgroupInfoClear(p->pVgroupInfo);
       tfree(p->pTableMeta);
       p = taosHashIterate(pCmd->pTableMetaMap, p);
     }