azul3d_multiwindow data race

[slimsag]

$ azul3d_multiwindow
==================
WARNING: DATA RACE
Read by goroutine 12:
  azul3d.org/engine/gfx/internal/gl/2.0/gl.Viewport()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/internal/gl/2.0/gl/package.go:1143 +0x30
  azul3d.org/engine/gfx/gl2.(*graphicsState).Begin()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/gl2/state.go:26 +0xd6
  azul3d.org/engine/gfx/gl2.(*device).hookedClear.func1()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/gl2/device.go:204 +0xb1
  azul3d.org/engine/gfx/window.(*glfwWindow).run()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/glfwwindow.go:684 +0x802

Previous write by main goroutine:
  azul3d.org/engine/gfx/internal/gl/2.0/gl.InitWithProcAddrFunc()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/internal/gl/2.0/gl/package.go:1446 +0x72f3
  azul3d.org/engine/gfx/internal/gl/2.0/gl.Init()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/internal/gl/2.0/gl/package.go:1146 +0x3c
  azul3d.org/engine/gfx/gl2.newDevice()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/gl2/device.go:465 +0x8c3
  azul3d.org/engine/gfx/gl2.New()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/gl2/gl2.go:110 +0x67
  azul3d.org/engine/gfx/window.glfwNewDevice()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/glfwgl2.go:22 +0x67
  azul3d.org/engine/gfx/window.(*glfwWindow).build()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/glfwwindow.go:771 +0xbe3
  azul3d.org/engine/gfx/window.doNew()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/glfwwindow.go:813 +0x58d
  azul3d.org/engine/gfx/window.New.func1()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/window.go:197 +0x60
  azul3d.org/engine/gfx/window.MainLoop()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/main.go:58 +0xd3
  main.main()
      /home/stephen/Desktop/godev/src/azul3d.org/examples/azul3d_multiwindow/azul3d_multiwindow.go:53 +0x3d

Goroutine 12 (running) created at:
  azul3d.org/engine/gfx/window.doNew()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/glfwwindow.go:821 +0x6d3
  azul3d.org/engine/gfx/window.New.func1()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/window.go:197 +0x60
  azul3d.org/engine/gfx/window.MainLoop()
      /home/stephen/Desktop/godev/src/azul3d.org/engine/gfx/window/main.go:58 +0xd3
  main.main()
      /home/stephen/Desktop/godev/src/azul3d.org/examples/azul3d_multiwindow/azul3d_multiwindow.go:53 +0x3d
==================
Found 1 data race(s)