[pygobject] gdk overrides: Fix wrapping of scroll events

[Christoph Reiter <creiter src gnome org>]

commit 09caf26f001e896d0d8b7adc60af56b80014b6a4
Author: Povilas Kanapickas <povilas radix lt>
Date:   Tue Apr 7 21:45:52 2020 +0300

    gdk overrides: Fix wrapping of scroll events

 gi/overrides/Gdk.py | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gi/overrides/Gdk.py b/gi/overrides/Gdk.py
index 29e9dc55..a40d3ec5 100644
--- a/gi/overrides/Gdk.py
+++ b/gi/overrides/Gdk.py
@@ -212,6 +212,7 @@ if GDK2 or GDK3:
             Gdk.EventType.DROP_FINISHED: 'dnd',
             Gdk.EventType.CLIENT_EVENT: 'client',
             Gdk.EventType.VISIBILITY_NOTIFY: 'visibility',
+            Gdk.EventType.SCROLL: 'scroll',
             Gdk.EventType.EXPOSE: 'expose',
             Gdk.EventType.MAP: 'any',
             Gdk.EventType.UNMAP: 'any',