mwberry

stderr during a crash: ``` $ yabar INH ya_bat E: memory E: cpu E: workspaces E: network E: ya_bat INH ya_bat E: space E: space E: title E: ya_bat INH...

So far, running under valgrind memcheck has not revealed where the memory corruption is occurring. However, running under helgrind pretty quickly honed on some potential data races around `ya_draw_pango_text`. ```...

For reference, I'm running `cairo-git-1.17.2+25+gaee96d175-1-x86_64.pkg.tar.xz`, which already has the fix for [this issue](https://bugs.freedesktop.org/show_bug.cgi?id=90318). I also tried on [1.16.0-2](https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/cairo&id=5de8bc8ca68ff9261ddfb0ab0adff2f4d76852e9) and got similar results.