illumos gate

Build errors with NULL pointer:

    In file included from /code/illumos-gate/proto/root_i386/usr/include/iso/stdio_iso.h:53:0,
                     from /code/illumos-gate/proto/root_i386/usr/include/stdio.h:82,
                     from dladm.c:27:
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: error: initialization makes integer from pointer without a cast [-Werror=int-conversion]
     #define NULL ((void *)0)
                  ^
    dladm.c:573:10: note: in expansion of macro 'NULL'
      { NULL, NULL, 0, 0 }
              ^~~~
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: note: (near initialization for 'bridge_lopts[8].has_arg')
     #define NULL ((void *)0)
                  ^
    dladm.c:573:10: note: in expansion of macro 'NULL'
      { NULL, NULL, 0, 0 }
              ^~~~
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: error: initialization makes integer from pointer without a cast [-Werror=int-conversion]
     #define NULL ((void *)0)
                  ^
    dladm.c:838:13: note: in expansion of macro 'NULL'
     { NULL,  0, NULL, 0}}
                 ^~~~
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: note: (near initialization for 'phys_fields[7].of_id')
     #define NULL ((void *)0)
                  ^
    dladm.c:838:13: note: in expansion of macro 'NULL'
     { NULL,  0, NULL, 0}}
                 ^~~~
    dladm.c: In function 'parse_wlan_keys':
    dladm.c:6190:24: error: comparison between pointer and integer [-Werror]
      while ((c = *token++) != NULL) {
                            ^~
    dladm.c: In function 'do_delete_secobj':
    dladm.c:7375:24: error: comparison between pointer and integer [-Werror]
      while ((c = *token++) != NULL) {
                            ^~
    dladm.c: In function 'do_show_secobj':
    dladm.c:7528:25: error: comparison between pointer and integer [-Werror]
       while ((c = *token++) != NULL) {
                             ^~
    cc1: all warnings being treated as errors