Fix signal handler race condition.

libexec/ftpd/ftpd.c

@@ -1644,6 +1644,11 @@ void
 dologout(status)
 	int status;
 {
+	/*
+	 * Prevent reception of SIGURG from resulting in a resumption
+	 * back to the main program loop.
+	*/
+	transflag = 0;
 
 	if (logged_in) {
 		(void) seteuid((uid_t)0);