request_selection_contents() checks whether the XFixes extension is available and will start a timer
to check for clipboard content updates at an interval. Running request_selection_contents() before
the XFixes extension is initialized will always start a timer and sends unnecessary clipboard
content change notifications, causing Office right-click menus to disappear.
Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>