[PATCH 12/23] unpack-trees(): carry skip-worktree bit over in merged_entry()

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

In this code path, we would remove "old" and replace it with "merge".
"old" may have skip-worktree bit, so re-add it to "merge".

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 unpack-trees.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/unpack-trees.c b/unpack-trees.c
index 1ab3c89..ac59fbe 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -680,6 +680,8 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
 		} else {
 			if (verify_uptodate(old, o))
 				return -1;
+			if (ce_skip_worktree(old))
+				update |= CE_SKIP_WORKTREE;
 			invalidate_ce_path(old, o);
 		}
 	}
-- 
1.6.5.2.216.g9c1ec