difftool: Check all return codes from compare()
authorDavid Aguilar <davvid@gmail.com>
Wed, 25 Jul 2012 03:14:23 +0000 (20:14 -0700)
committerJunio C Hamano <gitster@pobox.com>
Wed, 25 Jul 2012 16:41:54 +0000 (09:41 -0700)
Handle the case where compare() is unable to read its inputs.
Emit a warning so that the user knows that something went wrong.

We may later want to restructure the code so that we can inhibit
tempdir cleanup when this condition is reached.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
No differences found