maintainer-feedback requested: [Bug 280675] textproc/aspell: fix build with clang 19

Bugzilla Automation <bugzilla@FreeBSD.org> has asked FreeBSD Office Team
<office@FreeBSD.org> for maintainer-feedback:
Bug 280675: textproc/aspell: fix build with clang 19
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280675



--- Description ---
With clang 19 and gcc 15, textproc/aspell fails to compile, with errors
similar to:

    In file included from modules/speller/default/readonly_ws.cpp:51:
    modules/speller/default/vector_hash-t.hpp:186:43: error: no member named
'e' in 'VectorHashTable<Parms>'
      186 |	for (iterator i = begin(); i != this->e; ++i, ++this->_size);
	  |					~~~~  ^
    modules/speller/default/vector_hash-t.hpp:186:59: error: no member named
'_size' in 'VectorHashTable<Parms>'; did you mean 'size_'?
      186 |	for (iterator i = begin(); i != this->e; ++i, ++this->_size);
	  |							      ^~~~~
	  |							      size_
    modules/speller/default/vector_hash.hpp:182:17: note: 'size_' declared here
      182 |	size_type   size_;
	  |		    ^

Upstream commit <https://github.com/GNUAspell/aspell/commit/ee6cbb1>
fixes this this, so add it as a PATCHFILES entry in the Makefile, until
the next version of aspell is released.