[TD-3747]fix crash

src/client/src/tscServer.c

@@ -2532,7 +2532,8 @@ int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
 
   uint32_t size = tscGetTableMetaMaxSize();
   if (pTableMetaInfo->pTableMeta == NULL) {
-    pTableMetaInfo->pTableMeta = calloc(1, size);
+    pTableMetaInfo->pTableMeta    = calloc(1, size);
+    pTableMetaInfo->tableMetaSize = size;
   } else if (pTableMetaInfo->tableMetaSize < size) {
     char *tmp = realloc(pTableMetaInfo->pTableMeta, size); 
     if (tmp == NULL) { 
@@ -2541,8 +2542,8 @@ int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
     pTableMetaInfo->pTableMeta = (STableMeta *)tmp;
     pTableMetaInfo->tableMetaSize = size;
   } else {
-    uint32_t s = tscGetTableMetaSize(pTableMetaInfo->pTableMeta);
-    memset(pTableMetaInfo->pTableMeta, 0, s);
+    //uint32_t s = tscGetTableMetaSize(pTableMetaInfo->pTableMeta);
+    memset(pTableMetaInfo->pTableMeta, 0, size);
   }
 
   pTableMetaInfo->pTableMeta->tableType = -1;