Example "triangle" does not work on linux.

[entropylost]

With any rustc version > 1.47, on linux I get this error for the triangle example:

thread 'main' panicked at 'attempted to leave type `platform::platform::x11::util::input::PointerState` uninitialized, which is invalid'

I would guess that this happens due to an issue in winit (rust-windowing/winit#1773), so I would suggest updating it.

[rishflab]

I am having the same issue