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

diff --git a/log-tree.c b/log-tree.c
index d3a43e29cd50e0afb015f1a5efdb82fd195d9c93..4a3907fea02d50e1074ca1b785780a0753e77468 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "config.h"
 #include "diff.h"
+#include "object-store.h"
 #include "commit.h"
 #include "tag.h"
 #include "graph.h"