builtin-blame.c: use strbuf_readlink()
builtin-blame.c: use strbuf_readlink()

When faking a commit out of the work tree contents, use strbuf_readlink()
to read the contents of symbolic links.

Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>
Acked-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

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