Found by Adrian Glaubitz (cbmuser)

diff --git a/sysdeps/m68k/utmp-size.h b/sysdeps/m68k/utmp-size.h
index 5946685819..8f21ebe1b6 100644
--- a/sysdeps/m68k/utmp-size.h
+++ b/sysdeps/m68k/utmp-size.h
@@ -1,3 +1,2 @@
-/* m68k has 2-byte alignment.  */
-#define UTMP_SIZE 382
+#define UTMP_SIZE 384
 #define LASTLOG_SIZE 292