[PATCH] fast-import: close pack before unlinking it

This is sort of a companion patch to 4723ee9(Close files opened by
lock_file() before unlinking.): on Windows, you cannot delete what
is still open.

This makes test 9300-fast-import pass on Windows for me; quite a few
fast-imports leave temporary packs until the test "blank lines not
necessary after other commands" actually tests for the number of files
in .git/objects/pack/, which has a few temporary packs now.

I guess that 8b4eb6b(Do not perform cross-directory renames when
creating packs) was "responsible" for the breakage.

Signed-off-by: Johannes Schindelin <redacted>
---
 fast-import.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/fast-import.c b/fast-import.c
index 3276d5d..201d4ff 100644
--- a/fast-import.c
+++ b/fast-import.c

@@ -983,8 +983,10 @@ static void end_packfile(void)
 
 		pack_id++;
 	}
-	else
+	else {
+		close(old_p->pack_fd);
 		unlink(old_p->pack_name);
+	}
 	free(old_p);
 
 	/* We can't carry a delta across packfiles. */

-- 
1.6.1.rc3.368.g63acc