Makefile: help people who run 'make check' by mistake

diff --git a/unpack-trees.c b/unpack-trees.c
index e59d144d28164f2451784513105f6269f0e9167c..e5749ef638b4a9a490894d9d4fc5876d904ab9ac 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -382,7 +382,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
        o->merge_size = len;
 
        if (!dfc)
-               dfc = xcalloc(1, sizeof(struct cache_entry) + 1);
+               dfc = xcalloc(1, cache_entry_size(0));
        o->df_conflict_entry = dfc;
 
        if (len) {