The next patch is going to stop passing XCB_WINDOW_NONE (of type
xcb_window_enum_t) as an argument where these functions expect a void *,
which clang does not appreciate.
This patch cleans things up to better convince me and reviewers that
it's safe to do that.
v2: Emil Velikov: rebase/integrate with series
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>