firefox build broken by SVN r520537?

[Jan Beich]

Michael Butler <imb at protected-networks.net> writes:

> Is noone else seeing ..
>
> In file included from Unified_cpp_toolkit_xre0.cpp:56:
> /usr/ports/www/firefox/work/firefox-71.0/toolkit/xre/glxtest.cpp:39:10:
> fatal error: 'mozilla/widget/mozwayland.h' file not found
> #include "mozilla/widget/mozwayland.h"
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

See https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242790