elated fdo#60338: #error on umask(3) calls in currently unused code

(as dnssd_clientstub.c is only used on Windows), should we ever want to use it.

Change-Id: I5d9082ae69c505e4d60bbe8e60fdeaaf963a4614

sd/source/ui/remotecontrol/mDNSResponder/dnssd_clientstub.c

@@ -621,6 +621,7 @@ static DNSServiceErrorType deliver_request(ipc_msg_hdr *hdr, DNSServiceOp *sdr)
             caddr.sun_len = sizeof(struct sockaddr_un);
             #endif
             strcpy(caddr.sun_path, data);
+#error "the below umask(3) calls are bad in a MT program (cf. fdo#60338):"
             mask = umask(0);
             bindresult = bind(listenfd, (struct sockaddr *)&caddr, sizeof(caddr));
             umask(mask);