fix bug

src/client/src/tscSubquery.c

@@ -2744,6 +2744,7 @@ void tscHandleSubqueryError(SRetrieveSupport *trsupport, SSqlObj *pSql, int numO
       SSqlObj *userSql = ((SRetrieveSupport*)pParentSql->param)->pParentSql;
 
       tscFreeRetrieveSup(pParentSql);
+      tscFreeRetrieveSup(userSql);
 
       tscFreeSubobj(userSql);      
       tfree(userSql->pSubs);

src/client/src/tscUtil.c

@@ -3768,6 +3768,7 @@ static void tscSubqueryCompleteCallback(void* param, TAOS_RES* tres, int code) {
     SSqlObj *userSql = ((SRetrieveSupport*)pParentSql->param)->pParentSql;
 
     tscFreeRetrieveSup(pParentSql);
+    tscFreeRetrieveSup(userSql);
 
     tscFreeSubobj(userSql);    
     tfree(userSql->pSubs);