Use busybox error handling functions wherever possible.
diff --git a/coreutils/mknod.c b/coreutils/mknod.c
index 022ab85..4d8c598 100644
--- a/coreutils/mknod.c
+++ b/coreutils/mknod.c
@@ -84,7 +84,7 @@
 	mode |= perm;
 
 	if (mknod(argv[0], mode, dev) != 0)
-		error_msg_and_die("%s: %s\n", argv[0], strerror(errno));
+		perror_msg_and_die("%s", argv[0]);
 	return EXIT_SUCCESS;
 }