[Bug 280560] java/openjdk11: fix build with clang 19

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280560

            Bug ID: 280560
           Summary: java/openjdk11: fix build with clang 19
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: java@FreeBSD.org
          Reporter: dim@FreeBSD.org
          Assignee: java@FreeBSD.org
             Flags: maintainer-feedback?(java@FreeBSD.org)

Clang 19 is now more strict about undefined integral expressions used as
constants in enum, which results in errors compiling java/openjdk11,
similar to:

   
/wrkdirs/usr/ports/java/openjdk11/work/jdk11u-jdk-11.0.24-8-1/src/jdk.pack/share/native/common-unpack/constants.h:206:33:
error: expression is not an integral constant expression
      206 |     AO_UNUSED_MBZ             = (-1)<<13, // options bits reserved
for future use.
          |                                 ^~~~~~~~
   
/wrkdirs/usr/ports/java/openjdk11/work/jdk11u-jdk-11.0.24-8-1/src/jdk.pack/share/native/common-unpack/constants.h:206:37:
note: left shift of negative value -1
      206 |     AO_UNUSED_MBZ             = (-1)<<13, // options bits reserved
for future use.
          |                                     ^

Replace the negative value with ~0u to fix this error.

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