[Triangle Example] Fix crash when minimizing window #117
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Fixes a crash when minimizing the window in the triangle example due to the window size becoming zero as well as two minor changes. Also changes the swapchain to use the GLFW framebuffer size instead of the window size as iirc they can differ and the swapchain expects the framebuffer size since both operate in pixels.
Edit: Added a
deviceWaitIdle
call before the program exits since I got Vulkan validation errors about semaphores being deleted while still in use with the validation layer enabled.