illumos gate

Debug build errors with NULL pointer:

    In file included from ../../common/sys/model.h:35:0,
                     from ../../common/sys/resource.h:221,
                     from ../../common/sys/vnode.h:51,
                     from ../../common/vm/seg.h:43,
                     from ../../common/vm/as.h:47,
                     from ../../common/sys/devops.h:37,
                     from ../../common/sys/sunddi.h:39,
                     from ../../common/sys/usb/hcd/openhci/ohci.h:49,
                     from ../../common/sys/usb/hcd/openhci/ohcid.h:46,
                     from ../../common/io/usb/hcd/openhci/ohci.c:42:
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_insert_ed_on_reclaim_list':
    ../../common/io/usb/hcd/openhci/ohci.c:4608:40: error: comparison between pointer and integer [-Werror]
      ASSERT(Get_ED(ept->hced_reclaim_next) == NULL);
                                            ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_fill_in_td':
    ../../common/io/usb/hcd/openhci/ohci.c:6041:19: error: comparison between pointer and integer [-Werror]
      ASSERT(tw->tw_id != NULL);
                       ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_insert_td_on_tw':
    ../../common/io/usb/hcd/openhci/ohci.c:6407:38: error: comparison between pointer and integer [-Werror]
       ASSERT(Get_TD(td->hctd_tw_next_td) == NULL);
                                          ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_create_transfer_wrapper':
    ../../common/io/usb/hcd/openhci/ohci.c:6974:19: error: comparison between pointer and integer [-Werror]
      ASSERT(tw->tw_id != NULL);
                       ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_create_isoc_transfer_wrapper':
    ../../common/io/usb/hcd/openhci/ohci.c:7208:19: error: comparison between pointer and integer [-Werror]
      ASSERT(tw->tw_id != NULL);
                       ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci.c: In function 'ohci_free_tw':
    ../../common/io/usb/hcd/openhci/ohci.c:7622:19: error: comparison between pointer and integer [-Werror]
      ASSERT(tw->tw_id != NULL);
                       ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~

    In file included from ../../common/sys/model.h:35:0,
                     from ../../common/sys/resource.h:221,
                     from ../../common/sys/vnode.h:51,
                     from ../../common/vm/seg.h:43,
                     from ../../common/vm/as.h:47,
                     from ../../common/sys/devops.h:37,
                     from ../../common/sys/sunddi.h:39,
                     from ../../common/sys/usb/hcd/openhci/ohci.h:49,
                     from ../../common/sys/usb/hcd/openhci/ohcid.h:46,
                     from ../../common/io/usb/hcd/openhci/ohci_polled.c:39:
    ../../common/io/usb/hcd/openhci/ohci_polled.c: In function 'ohci_polled_insert_td_on_tw':
    ../../common/io/usb/hcd/openhci/ohci_polled.c:2026:38: error: comparison between pointer and integer [-Werror]
       ASSERT(Get_TD(td->hctd_tw_next_td) == NULL);
                                          ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~
    ../../common/io/usb/hcd/openhci/ohci_polled.c: In function 'ohci_polled_create_tw':
    ../../common/io/usb/hcd/openhci/ohci_polled.c:2218:19: error: comparison between pointer and integer [-Werror]
      ASSERT(tw->tw_id != NULL);
                       ^
    ../../common/sys/debug.h:59:29: note: in definition of macro 'ASSERT'
     #define ASSERT(EX) ((void)((EX) || assfail(#EX, __FILE__, __LINE__)))
                                 ^~

    cc1: all warnings being treated as errors