Typedefs starting with `w' in osfmk/kern

• WaitQueue osfmk/kern/wait_queue.h:34
• wait_queue_element_t osfmk/kern/wait_queue.h:69
• wait_queue_link_t osfmk/kern/wait_queue.h:90
• WaitQueueSub osfmk/kern/wait_queue.h:46
• wait_queue_sub_t osfmk/kern/wait_queue.h:48
• wait_queue_t osfmk/kern/kern_types.h:81