K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2022-07-29T17:10:13.192491Z
K 7
svn:log
V 331
vtfontcvt: improve hex font format validation

Previously an EOF would result in sscanf returning -1 leading to a
crash.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation

(cherry picked from commit 119db52f4228fae161306ac29dc739638c132c26)

Git Hash:   5db2f88fa537b851eba1ec26ec4396854bed6f5b
Git Author: emaste@FreeBSD.org
END