[TD-440] fix resource leak in mnodeTable.c

src/mnode/src/mnodeTable.c

@@ -484,7 +484,10 @@ static int32_t mnodeSuperTableActionDecode(SSdbOper *pOper) {
   if (pStable == NULL) return TSDB_CODE_SERV_OUT_OF_MEMORY;
 
   int32_t len = strlen(pOper->rowData);
-  if (len > TSDB_TABLE_ID_LEN) return TSDB_CODE_INVALID_TABLE_ID;
+  if (len > TSDB_TABLE_ID_LEN){
+    free(pStable);
+    return TSDB_CODE_INVALID_TABLE_ID;
+  }
   pStable->info.tableId = strdup(pOper->rowData);
   len++;
 
@@ -2369,4 +2372,4 @@ static int32_t mnodeRetrieveStreams(SShowObj *pShow, char *data, int32_t rows, v
   mnodeDecDbRef(pDb);
 
   return numOfRows;
-}
\ No newline at end of file
+}