get_sha1_oneline: make callers prepare the commit list to traverse

diff --git a/object.h b/object.h
index 82877c831ca7fe39abbb98805f5801bdc6fcac9c..4d1d61546f0441bd198cda3ad153b35a91444b72 100644 (file)
--- a/object.h
+++ b/object.h
@@ -21,6 +21,8 @@ struct object_array {
        } *objects;
 };
 
+#define OBJECT_ARRAY_INIT { 0, 0, NULL }
+
 #define TYPE_BITS   3
 #define FLAG_BITS  27