Use a single space after colon in another errx().
authortb <tb@openbsd.org>
Wed, 1 Aug 2018 13:35:33 +0000 (13:35 +0000)
committertb <tb@openbsd.org>
Wed, 1 Aug 2018 13:35:33 +0000 (13:35 +0000)
commitaab43efd6887fdbf85bb85af3a1f6e9265ce2073
treea6d0cf5dec7d5a2561c85d36b5b0d807fd8c7c02
parent152b0eae2f11e21b6090a821eba943a962844800
Use a single space after colon in another errx().

Pointed out by Kris Katterjohn
usr.bin/jot/jot.c