[FIX] mail: inverts the zoom scroll direction of the attachment viewer

This commit inverts the zoom direction of the scroll wheel in the
attachment viewer to respect the behaviour of before the refactor.

part of task-2171884

closes odoo/odoo#59992

Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/addons/mail/static/src/components/attachment_viewer/attachment_viewer.js b/addons/mail/static/src/components/attachment_viewer/attachment_viewer.js
index 1642e531758..390eac9ebc3 100644
--- a/addons/mail/static/src/components/attachment_viewer/attachment_viewer.js
+++ b/addons/mail/static/src/components/attachment_viewer/attachment_viewer.js
@@ -573,9 +573,9 @@ class AttachmentViewer extends Component {
             return;
         }
         if (ev.deltaY > 0) {
-            this._zoomIn({ scroll: true });
-        } else {
             this._zoomOut({ scroll: true });
+        } else {
+            this._zoomIn({ scroll: true });
         }
     }