wt-status.c: don't leak directory entries when processing untracked,ignored
When iterating through the list of directory entries, searching for
untracked entries, only the entries added to the string_list were free'd.
The rest (tracked or not matching the pathspec) were leaked.
Ditto for the "ignored" loop.
Rearrange the loops so that all entries are free'd.
Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>