git-format-patch: fix bug using -o in subdirectories
git-format-patch: fix bug using -o in subdirectories

This was introduced by me in commit v1.4.2.1-gc08e524.

Signed-off-by: Matthias Lederhofer <507cbf130ec1f0ec254653b4a9393a0899dd8ba7@gmx.net>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git