Jim Meyering c8c4450e19 git format-patch: avoid underrun when format.headers is empty or all NLs ...

* builtin-log.c (add_header): Avoid a buffer underrun when
format.headers is empty or all newlines.  Reproduce with this:
git config format.headers '' && git format-patch -1

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2008-08-19 18:08:00 -07:00

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