tree-walk: use size_t consistently

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 20eb81cc92f947d872b31a179d43d97772ff25e4..da5b4ec4bc50e4e3adaba0f25820262b6a7436a0 100755 (executable)
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -972,7 +972,11 @@ sub coalesce_overlapping_hunks {
                        next;
                }
                if ($ofs_delta) {
-                       $n_ofs += $ofs_delta;
+                       if ($patch_mode_flavour{IS_REVERSE}) {
+                               $o_ofs -= $ofs_delta;
+                       } else {
+                               $n_ofs += $ofs_delta;
+                       }
                        $_->{TEXT}->[0] = format_hunk_header($o_ofs, $o_cnt,
                                                             $n_ofs, $n_cnt);
                }