Don't skip modified shaders when tex viewer is just in another tab
Don't skip modified shaders when tex viewer is just in another tab

* We only want to skip these events if the texture viewer has actually
  been closed and destroyed.

Lssikkes/renderdoc,baldurk/renderdoc,googlestadia/renderdoc,michaelrgb/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,etnlGD/renderdoc,TurtleRockStudios/renderdoc_public,michaelrgb/renderdoc,michaelrgb/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc,Lssikkes/renderdoc,baldurk/renderdoc,victor-moya/renderdoc,michaelrgb/renderdoc,Lssikkes/renderdoc,Lssikkes/renderdoc,Zorro666/renderdoc,cgmb/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,cgmb/renderdoc,googlestadia/renderdoc,etnlGD/renderdoc,etnlGD/renderdoc,victor-moya/renderdoc,Zorro666/renderdoc,etnlGD/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,googlestadia/renderdoc,Lssikkes/renderdoc,etnlGD/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,michaelrgb/renderdoc,TurtleRockStudios/renderdoc_public,etnlGD/renderdoc,cgmb/renderdoc,victor-moya/renderdoc,cgmb/renderdoc,cgmb/renderdoc,googlestadia/renderdoc,victor-moya/renderdoc,Zorro666/renderdoc,Lssikkes/renderdoc,victor-moya/renderdoc,googlestadia/renderdoc,victor-moya/renderdoc,TurtleRockStudios/renderdoc_public