commit: add short-circuit to paint_down_to_common()

diff --git a/rerere.c b/rerere.c
index 1ce440f4bb84d001ff2b0ac1a67772f4bf5926c0..79203c6c1eae0db5515030b138e9e40e219af5f5 100644 (file)
--- a/rerere.c
+++ b/rerere.c
@@ -159,8 +159,8 @@ static struct rerere_dir *find_rerere_dir(const char *hex)
                ALLOC_GROW(rerere_dir, rerere_dir_nr + 1, rerere_dir_alloc);
                /* ... and add it in. */
                rerere_dir_nr++;
-               memmove(rerere_dir + pos + 1, rerere_dir + pos,
-                       (rerere_dir_nr - pos - 1) * sizeof(*rerere_dir));
+               MOVE_ARRAY(rerere_dir + pos + 1, rerere_dir + pos,
+                          rerere_dir_nr - pos - 1);
                rerere_dir[pos] = rr_dir;
                scan_rerere_dir(rr_dir);
        }