illumos gate

Build errors with NULL pointer:

    kconf.c: In function 'main':
    kconf.c:213:43: error: comparison between pointer and integer [-Werror]
      if ((code =  __profile_release(profile)) != NULL)
                                               ^~

    kadm5_create.c: In function 'add_admin_princ':
    kadm5_create.c:309:24: error: comparison between pointer and integer [-Werror]
        if (ret || *enctype == NULL) {
                            ^~

    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 kdb5_create.c:60:
    kdb5_create.c: In function 'kdb5_create':
    /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)
                  ^
    kdb5_create.c:171:34: note: in expansion of macro 'NULL'
         krb5_data master_salt = { 0, NULL };
                                      ^~~~
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: note: (near initialization for 'master_salt.length')
     #define NULL ((void *)0)
                  ^
    kdb5_create.c:171:34: note: in expansion of macro 'NULL'
         krb5_data master_salt = { 0, NULL };
                                      ^~~~

    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 kwarnd_proc.c:32:
    kwarnd_proc.c: In function 'kwarnd_check_warning_list':
    /code/illumos-gate/proto/root_i386/usr/include/sys/null.h:28:14: error: passing argument 2 of 'poll' makes integer from pointer without a cast [-Werror=int-conversion]
     #define NULL ((void *)0)
                  ^
    kwarnd_proc.c:886:21: note: in expansion of macro 'NULL'
       (void) poll(NULL, NULL, 60000);
                         ^~~~
    In file included from /code/illumos-gate/proto/root_i386/usr/include/sys/socket.h:62:0,
                     from /code/illumos-gate/proto/root_i386/usr/include/rpc/rpc.h:65,
                     from kwarnd.h:9,
                     from kwarnd_proc.c:40:
    /code/illumos-gate/proto/root_i386/usr/include/sys/poll.h:152:5: note: expected 'nfds_t {aka long unsigned int}' but argument is of type 'void *'
     int poll(struct pollfd *, nfds_t, int);
         ^~~~
    cc1: all warnings being treated as errors