diffcore.h: drop extern from function declaration

diff --git a/merge.c b/merge.c
index f123658e582fc1f142b25bb8c71b5dcbe84fe3aa..e30e03fb84a7677520d208a5688bb7170c22bf8e 100644 (file)
--- a/merge.c
+++ b/merge.c
@@ -11,41 +11,7 @@
 
 static const char *merge_argument(struct commit *commit)
 {
-       if (commit)
-               return oid_to_hex(&commit->object.oid);
-       else
-               return EMPTY_TREE_SHA1_HEX;
-}
-
-int index_has_changes(struct strbuf *sb)
-{
-       struct object_id head;
-       int i;
-
-       if (!get_oid_tree("HEAD", &head)) {
-               struct diff_options opt;
-
-               diff_setup(&opt);
-               opt.flags.exit_with_status = 1;
-               if (!sb)
-                       opt.flags.quick = 1;
-               do_diff_cache(&head, &opt);
-               diffcore_std(&opt);
-               for (i = 0; sb && i < diff_queued_diff.nr; i++) {
-                       if (i)
-                               strbuf_addch(sb, ' ');
-                       strbuf_addstr(sb, diff_queued_diff.queue[i]->two->path);
-               }
-               diff_flush(&opt);
-               return opt.flags.has_changes != 0;
-       } else {
-               for (i = 0; sb && i < active_nr; i++) {
-                       if (i)
-                               strbuf_addch(sb, ' ');
-                       strbuf_addstr(sb, active_cache[i]->name);
-               }
-               return !!active_nr;
-       }
+       return oid_to_hex(commit ? &commit->object.oid : the_hash_algo->empty_tree);
 }
 
 int try_merge_command(const char *strategy, size_t xopts_nr,
@@ -130,8 +96,11 @@ int checkout_fast_forward(const struct object_id *head,
 
        if (unpack_trees(nr_trees, t, &opts)) {
                rollback_lock_file(&lock_file);
+               clear_unpack_trees_porcelain(&opts);
                return -1;
        }
+       clear_unpack_trees_porcelain(&opts);
+
        if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
                return error(_("unable to write new index file"));
        return 0;