'simple' error message functions by Loic Grenie <loic.grenie@gmail.com>.
263 bytes saved.

diff --git a/init/mesg.c b/init/mesg.c
index e182b41..1a576cb 100644
--- a/init/mesg.c
+++ b/init/mesg.c
@@ -40,7 +40,7 @@
 				return EXIT_SUCCESS;
 			}
 		}
-		bb_perror_msg_and_die("%s", tty);
+		bb_simple_perror_msg_and_die(tty);
 	}
 	bb_show_usage();
 }