maintainer-feedback requested: [Bug 280728] www/webkit2-gtk3: fix build with clang 19

Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-gnome (Nobody)
<gnome@FreeBSD.org> for maintainer-feedback:
Bug 280728: www/webkit2-gtk3: fix build with clang 19
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280728



--- Description ---
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/www/webkit2-gtk3/work/webkitgtk-2.34.6/Source/JavaScriptCore
/assembler/AbstractMacroAssembler.h:974:65:
error: a template argument list is expected after a name prefixed by the
template keyword [-Wmissing-template-arg-list-after-template-kw]
      974 |	    AssemblerType::repatchCompact(dataLabelCompact.template
dataLocation(), value);
	  |								    ^

In these cases, appending "<>" is enough to satisfy the constraint.
Upstream has committed a fix to their main branch [2], but since some
code has moved around, and other functions have been removed, it does
not apply cleanly to 2.34.6. Therefore, apply only the necessary fixes
manually for now.

[1] https://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#96
[2] https://github.com/WebKit/WebKit/commit/62b6e2db547e