When looking at expanded git logs with vc-print-root-log (C-x v L, then <enter>
by default), emacs was stripping out all leading whitespace from git logs. This
was done by an (indent-region) call. This patch fixes this issue by removing
this call. It might be good to remove a constant amount of whitespace from the
beginning of each log line, but it's not obvious that matters, and it seems more
trouble than it's worth.