XWayland tablet devices have the Wayland seat ID appended to the end of them, preceded by a colon. This prevents match_token from properly detecting XWayland devices and causes Wintab32 to fail to initialize. This change allows a matched token to end in a colon, and thus allows XWayland tablet devices to be detected correctly.
Signed-off-by: John Chadwick john@jchw.io