Merge pull request #15870 from taosdata/fix/rpcLeakmem

fix: avoid mem leak

source/libs/transport/src/transCli.c

@@ -1381,6 +1381,7 @@ int transReleaseCliHandle(void* handle) {
   tGDebug("send release request at thread:%08" PRId64 "", pThrd->pid);
 
   if (0 != transAsyncSend(pThrd->asyncPool, &cmsg->q)) {
+    taosMemoryFree(cmsg);
     return -1;
   }
   return 0;