Merge pull request #20268 from taosdata/fix/fixDoubleFree

fix: avoid double free conn

source/libs/transport/src/transCli.c

@@ -864,6 +864,8 @@ static void cliDestroyConn(SCliConn* conn, bool clear) {
   QUEUE_REMOVE(&conn->q);
   QUEUE_INIT(&conn->q);
 
+  conn->broken = true;
+
   if (conn->list != NULL) {
     SConnList* connList = conn->list;
     connList->list->numOfConn--;
@@ -1230,7 +1232,7 @@ static void cliSendBatchCb(uv_write_t* req, int status) {
   } else {
     tDebug("%s conn %p succ to send batch msg, batch size:%d, msgLen:%d", CONN_GET_INST_LABEL(conn), conn, p->wLen,
            p->batchSize);
-    if (!uv_is_closing((uv_handle_t*)&conn->stream)) {
+    if (!uv_is_closing((uv_handle_t*)&conn->stream) && conn->broken == false) {
       if (nxtBatch != NULL) {
         conn->pBatch = nxtBatch;
         cliSendBatch(conn);