openjdk8 fails to build on netbsd-8

[Greg Troxel <gdt%lexort.com@localhost>]

This doesn't seem to depend on heimdal, but that is newly isntalled.
Last sucessful build was on November 6.


In file included from /tmp/work/lang/openjdk8/work/.buildlink/include/krb5/gssapi.h:39:0,
                 from /tmp/work/lang/openjdk8/work/openjdk-jdk8u-jdk8u242-b07.1/jdk/src/solaris/native/sun/security/jgss/wrapper/NativeFunc.h:29,
                 from /tmp/work/lang/openjdk8/work/openjdk-jdk8u-jdk8u242-b07.1/jdk/src/share/native/sun/security/jgss/wrapper/GSSLibStub.c:28:
/tmp/work/lang/openjdk8/work/.buildlink/include/krb5/gssapi/gssapi.h:93:40: error: conflicting types for 'gss_name_t'
 typedef struct gss_name_t_desc_struct *gss_name_t;
                                        ^
In file included from /tmp/work/lang/openjdk8/work/openjdk-jdk8u-jdk8u242-b07.1/jdk/src/share/native/sun/security/jgss/wrapper/NativeUtil.h:29:0,
                 from /tmp/work/lang/openjdk8/work/openjdk-jdk8u-jdk8u242-b07.1/jdk/src/share/native/sun/security/jgss/wrapper/GSSLibStub.c:27:
/tmp/work/lang/openjdk8/work/openjdk-jdk8u-jdk8u242-b07.1/jdk/src/share/native/sun/security/jgss/wrapper/gssapi.h:60:16: note: previous declaration of 'gss_name_t' was he\
re
 typedef void * gss_name_t;
                ^