net/transmission-gtk build fails

[Paul Goyette <paul%whooppee.com@localhost>]

On an amd64 NetBSD-10.99.4 from just a couple days ago, and with pkgsrc
updated to yesterday, I am seeing the following reproducible build error
on net/transmission-gtk

[ 96%] Building CXX object gtk/CMakeFiles/transmission-gtk.dir/Session.cc.o
In file included from /tmp/pkgs/net/transmission-gtk/work.x86_64/transmission-4.0.5/gtk/OptionsDialog.cc:10:
/tmp/pkgs/net/transmission-gtk/work.x86_64/transmission-4.0.5/gtk/OptionsDialog.cc: In member function 'void TorrentFileChooserDialog::onOpenDialogResponse(int, Glib::RefPtr<Session>&)':
/tmp/pkgs/net/transmission-gtk/work.x86_64/transmission-4.0.5/gtk/OptionsDialog.cc:341:38: error: 'get_files2' was not declared in this scope; did you mean 'get_files'?
  341 |         auto const files = IF_GTKMM4(get_files2, get_files)();
      |                                      ^~~~~~~~~~
/tmp/pkgs/net/transmission-gtk/work.x86_64/transmission-4.0.5/gtk/GtkCompat.h:42:41:note: in definition of macro 'IF_GTKMM4'
   42 | #define IF_GTKMM4(ThenValue, ElseValue) ThenValue
      |                                         ^~~~~~~~~
At global scope:
cc1plus: note: unrecognized command-line option '-Wno-exit-time-destructors' may have been intended to silence earlier diagnostics
gmake[2]: *** [gtk/CMakeFiles/transmission-gtk.dir/build.make:350: gtk/CMakeFiles/transmission-gtk.dir/OptionsDialog.cc.o] Error 1
gmake[2]: *** Waiting for unfinished jobs....
gmake[1]: *** [CMakeFiles/Makefile2:444: gtk/CMakeFiles/transmission-gtk.dir/all] Error 2
gmake: *** [Makefile:156: all] Error 2
*** Error code 2

Stop.


This build was successful just a couple days ago (with an earlier pkgsrc
and earlier NetBSD).

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