builtin/worktree.c: use error_errno()
commit8d19e9309411ca875928b9336ff626b8b6851fcb
authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Sun, 8 May 2016 09:47:34 +0000 (8 16:47 +0700)
committerJunio C Hamano <gitster@pobox.com>
Mon, 9 May 2016 19:29:08 +0000 (9 12:29 -0700)
treedcbc030ea7e0b1754048ea1818cfff19df8d1cc7
parent17bef17ef8d319e620c19d032c082a18eb88a65f
builtin/worktree.c: use error_errno()

While at there, improve the error message to say _what_ failed to
remove.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin/worktree.c