revisions API users: add straightforward release_revisions()

Add a release_revisions() to various users of "struct rev_list" in
those straightforward cases where we only need to add the
release_revisions() call to the end of a block, and don't need to
e.g. refactor anything to use a "goto cleanup" pattern.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/wt-status.c b/wt-status.c
index 922cf78..f910062 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -1152,6 +1152,7 @@ static void wt_longstatus_print_verbose(struct wt_status *s)
 		rev.diffopt.b_prefix = "w/";
 		run_diff_files(&rev, 0);
 	}
+	release_revisions(&rev);
 }
 
 static void wt_longstatus_print_tracking(struct wt_status *s)