tests: use 'test_must_be_empty' instead of 'test ! -s'

diff --git a/pack-bitmap-write.c b/pack-bitmap-write.c
index 7b2dc3e7dc768a2d2405a9ae3b1d13f86069a93d..d977e9bacb19ed766dd0a501b6fbcae800bb4ae0 100644 (file)
--- a/pack-bitmap-write.c
+++ b/pack-bitmap-write.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "object-store.h"
 #include "commit.h"
 #include "tag.h"
 #include "diff.h"
@@ -360,11 +361,17 @@ static int date_compare(const void *_a, const void *_b)
 
 void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack)
 {
-       if (prepare_bitmap_git() < 0)
+       struct bitmap_index *bitmap_git;
+       if (!(bitmap_git = prepare_bitmap_git()))
                return;
 
        writer.reused = kh_init_sha1();
-       rebuild_existing_bitmaps(to_pack, writer.reused, writer.show_progress);
+       rebuild_existing_bitmaps(bitmap_git, to_pack, writer.reused,
+                                writer.show_progress);
+       /*
+        * NEEDSWORK: rebuild_existing_bitmaps() makes writer.reused reference
+        * some bitmaps in bitmap_git, so we can't free the latter.
+        */
 }
 
 static struct ewah_bitmap *find_reused_bitmap(const unsigned char *sha1)