gdkkeys-win32: Fix uninitialized value (#4610)

Isopodrequested to merge
Isopod/gtk:fix-4610 into gtk-3-24

gdk_win32_keymap_get_entries_for_keycode() did not initialize n_entries, which led to a wrong number of items being returned in some cases.

Fixes #4610 (closed)

Edited by Isopod

Merge request reports