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

diff --git a/match-trees.c b/match-trees.c
index 72cc2baa3f96b2cbfa296335c7f0ff1094b6e96c..4cdeff53e1e8533b0dba168c19187353901253ea 100644 (file)
--- a/match-trees.c
+++ b/match-trees.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "tree.h"
 #include "tree-walk.h"
+#include "object-store.h"
 
 static int score_missing(unsigned mode, const char *path)
 {