cocci: apply the "cache.h" part of "the_repository.pending"

Apply the part of "the_repository.pending.cocci" pertaining to
"cache.h".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/prune.c

@@ -168,7 +168,7 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
 		struct object_id oid;
 		const char *name = *argv++;
 
-		if (!get_oid(name, &oid)) {
+		if (!repo_get_oid(the_repository, name, &oid)) {
 			struct object *object = parse_object_or_die(&oid,
 								    name);
 			add_pending_object(&revs, object, "");