From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 7 Dec 2016 19:11:26 +0000 (-0800)
Subject: wt-status: implement opportunisitc index update correctly
X-Git-Tag: v2.12.0-rc0~128^2~2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/89d38fb26664038a85eb5a0da8fa4d23228e450d?hp=89d38fb26664038a85eb5a0da8fa4d23228e450d

wt-status: implement opportunisitc index update correctly

The require_clean_work_tree() function calls hold_locked_index()
with die_on_error=0 to signal that it is OK if it fails to obtain
the lock, but unconditionally calls update_index_if_able(), which
will try to write into fd=-1.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
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