blame: extract find_single_final
blame: extract find_single_final

Signed-off-by: Max Kirillov <0706025b2bbcec1ed8d64822f4eccd96314938d0@max630.net>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

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