[Bug 281418] misc/openvdb: fix build with clang 19

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 10 Sep 2024 14:24:25 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281418

            Bug ID: 281418
           Summary: misc/openvdb: fix build with clang 19
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: yuri@freebsd.org
          Reporter: dim@FreeBSD.org
             Flags: maintainer-feedback?(yuri@freebsd.org)
          Assignee: yuri@freebsd.org

Clang 19 now implements CWG 96 [1], which requires a template argument
list after a 'template' keyword, resulting in errors similar to:

   
/wrkdirs/usr/ports/misc/openvdb/work/openvdb-11.0.0/openvdb/openvdb/../openvdb/tree/NodeManager.h:330:31:
error: a template argument list is expected after a name prefixed by the
template keyword [-Wmissing-template-arg-list-after-template-kw]
      330 |                 OpT::template eval(mNodeOp, it);
          |                               ^
   
/wrkdirs/usr/ports/misc/openvdb/work/openvdb-11.0.0/openvdb/openvdb/../openvdb/tree/NodeManager.h:350:31:
error: a template argument list is expected after a name prefixed by the
template keyword [-Wmissing-template-arg-list-after-template-kw]
      350 |                 OpT::template eval(mNodeOp, it);
          |                               ^
   
/wrkdirs/usr/ports/misc/openvdb/work/openvdb-11.0.0/openvdb/openvdb/../openvdb/tree/NodeManager.h:375:31:
error: a template argument list is expected after a name prefixed by the
template keyword [-Wmissing-template-arg-list-after-template-kw]
      375 |                 OpT::template eval(*mNodeOp, it);
          |                               ^

In these cases, appending "<>" is enough to satisfy the constraint.

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