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

diff --git a/util-linux/setarch.c b/util-linux/setarch.c
index 2fb47f9..08294e5 100644
--- a/util-linux/setarch.c
+++ b/util-linux/setarch.c
@@ -44,5 +44,5 @@
 		BB_EXECVP(argv[0], argv);
 	}
 
-	bb_perror_msg_and_die("%s", argv[0]);
+	bb_simple_perror_msg_and_die(argv[0]);
 }