pack-bitmap-write: use repo_parse_tree()

1a6768d (pack-bitmap-write: stop depending on `the_repository`,
2025-03-10) replaced explicit uses of the_repository.  parse_tree() uses
it internally, though, so call repo_parse_tree() instead and hand it the
correct repository.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: rscharfe

pack-bitmap-write.c

@@ -478,7 +478,7 @@ static int fill_bitmap_tree(struct bitmap_writer *writer,
 		return 0;
 	bitmap_set(bitmap, pos);
 
-	if (parse_tree(tree) < 0)
+	if (repo_parse_tree(writer->repo, tree) < 0)
 		die("unable to load tree object %s",
 		    oid_to_hex(&tree->object.oid));
 	init_tree_desc(&desc, &tree->object.oid, tree->buffer, tree->size);