meson: call run_command with check=true

This avoids a warning in meson since the default value will change:
WARNING: You should add the boolean check kwarg to the run_command call.
         It currently defaults to false,
         but it will default to true in future releases of meson.
         See also: https://github.com/mesonbuild/meson/issues/9300

It's probably best to use the new default (true) that the old (false)

Reviewed-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15776>

src/util/meson.build

@@ -387,7 +387,8 @@ if with_tests
     # https://gitlab.freedesktop.org/mesa/mesa/-/issues/2788
     prog_winepath = find_program('winepath')
     process_test_exe_full_path = run_command(
-      prog_winepath, '-w', process_test_exe.full_path()
+      prog_winepath, '-w', process_test_exe.full_path(),
+      check : true
     ).stdout().strip()
   else
     process_test_exe_full_path = process_test_exe.full_path()