Various cleanup:

Various cleanup:
1. Style: Don't use variables as format strings.
NetBSD rev. 1.26 (May 23, 2011) joerg@NetBSD via maintainer pjanzen@.
2. Style: Avoid needless pointer arithmetics.
NetBSD rev. 1.27 (Oct 13, 2012) dholland@NetBSD via pjanzen@,
who also applied some KNF to the indentation while here.
3. End curses before printing fatal error messages; from pjanzen@.