merge-recursive: always roll back lock in `merge_recursive_generic()`

If we return early, or if `active_cache_changed` is false, we forget to
roll back the lockfile.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/merge-recursive.c b/merge-recursive.c
index 6ff971f9a2a8e251b8762d75214697698e2d1ce6..129577987ba25402a6b9494b103a4643e2b37e68 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -2218,12 +2218,15 @@ int merge_recursive_generic(struct merge_options *o,
        hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
        clean = merge_recursive(o, head_commit, next_commit, ca,
                        result);
-       if (clean < 0)
+       if (clean < 0) {
+               rollback_lock_file(&lock);
                return clean;
+       }
 
        if (active_cache_changed &&
            write_locked_index(&the_index, &lock, COMMIT_LOCK))
                return err(o, _("Unable to write index."));
+       rollback_lock_file(&lock);
 
        return clean ? 0 : 1;
 }