daemon: stream: Close stream on send failure

This is the only place in daemon/stream.c that sets
'stream->closed = true' but neglects to actually abort the stream
and remove the callback, which seems wrong.

daemon/stream.c

@@ -539,6 +539,9 @@ daemonStreamHandleWriteData(virNetServerClientPtr client,
 
         VIR_INFO("Stream send failed");
         stream->closed = true;
+        virStreamEventRemoveCallback(stream->st);
+        virStreamAbort(stream->st);
+
         return virNetServerProgramSendReplyError(stream->prog,
                                                  client,
                                                  msg,