use st_add and st_mult for allocation size computation

diff --git a/diffcore-order.c b/diffcore-order.c
index 97dd3d0095723c194288db0da1b9cfbf400e7e26..69d41f7a5781a10e43cf0e74f20be85a0d1fc5be 100644 (file)
--- a/diffcore-order.c
+++ b/diffcore-order.c
@@ -52,7 +52,7 @@ static void prepare_order(const char *orderfile)
                }
                if (pass == 0) {
                        order_cnt = cnt;
-                       order = xmalloc(sizeof(*order) * cnt);
+                       ALLOC_ARRAY(order, cnt);
                }
        }
 }
@@ -120,7 +120,7 @@ void diffcore_order(const char *orderfile)
        if (!q->nr)
                return;
 
-       o = xmalloc(sizeof(*o) * q->nr);
+       ALLOC_ARRAY(o, q->nr);
        for (i = 0; i < q->nr; i++)
                o[i].obj = q->queue[i];
        order_objects(orderfile, pair_pathtwo, o, q->nr);