[PATCH v2 8/8] pack-bitmap.c: reimplement `midx_bitmap_filename()` with helper

[Taylor Blau <me@ttaylorr.com>]

Now that we have the `get_midx_filename_ext()` helper, we can
reimplement the `midx_bitmap_filename()` function in terms of it.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 pack-bitmap.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pack-bitmap.c b/pack-bitmap.c
index 35c5ef9d3c..fe8e8a51d3 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -309,9 +309,8 @@ static int load_bitmap_entries_v1(struct bitmap_index *index)
 char *midx_bitmap_filename(struct multi_pack_index *midx)
 {
 	struct strbuf buf = STRBUF_INIT;
-
-	get_midx_filename(&buf, midx->object_dir);
-	strbuf_addf(&buf, "-%s.bitmap", hash_to_hex(get_midx_checksum(midx)));
+	get_midx_filename_ext(&buf, midx->object_dir, get_midx_checksum(midx),
+			      MIDX_EXT_BITMAP);
 
 	return strbuf_detach(&buf, NULL);
 }
-- 
2.45.1.321.gbcadaf92783