Merge pull request #14128 from rabbitmq/mergify/bp/v4.1.x/pr-14123

By @tomyouyou: Avoid a scary log exception when a closing connection runs into an exception during a command writer flush operation (backport #14123)

Author: michaelklishin

deps/rabbit/src/rabbit_channel.erl

@@ -637,7 +637,12 @@ handle_cast(ready_for_close,
     {stop, normal, State};
 
 handle_cast(terminate, State = #ch{cfg = #conf{writer_pid = WriterPid}}) ->
-    ok = rabbit_writer:flush(WriterPid),
+    try
+       ok = rabbit_writer:flush(WriterPid)
+    catch
+        _Class:Reason ->
+            rabbit_log:debug("Failed to flush pending writes on a terminating connection, reason: ~tp", [Reason])
+    end,
     {stop, normal, State};
 
 handle_cast({command, #'basic.consume_ok'{consumer_tag = CTag} = Msg},