[OTS] Fix incorrect parsing/validation of the empty CFF index

Don't add extra 2bytes when parsing an empty INDEX.

BUG=chromium:106651
TEST=ran test_{un,}malicious_fonts.sh

Review URL: http://codereview.chromium.org/8953024/



git-svn-id: http://ots.googlecode.com/svn/trunk@77 a4e77c2c-9104-11de-800e-5b313e0d2bf3
1 file changed