Merge branch 'jk/pack-objects-no-bitmap-when-splitting'

Splitting pack-objects output into multiple packs is incompatible
with the use of reachability bitmap.

* jk/pack-objects-no-bitmap-when-splitting:
  pack-objects: turn off bitmaps when we split packs

builtin/pack-objects.c

@@ -811,6 +811,7 @@ static void write_pack_file(void)
 			fixup_pack_header_footer(fd, sha1, pack_tmp_name,
 						 nr_written, sha1, offset);
 			close(fd);
+			write_bitmap_index = 0;
 		}
 
 		if (!pack_to_stdout) {