Account for custom close buttons/actions in browser
Account for custom close buttons/actions in browser

When the window control buttons aren't drawn by the platform, but the application instead, MinTrayR missed the code.

Closes GH-6

nmaier/mintrayr,nmaier/mintrayr,jeffkowalski/mintrayr,nmaier/mintrayr,nmaier/mintrayr,jeffkowalski/mintrayr,jeffkowalski/mintrayr,jeffkowalski/mintrayr