28: msaa-line example fixes r=kvark a=rukai This PR fixes the msaa-line example in addition to the fixes in https://github.com/gfx-rs/wgpu/pull/235 If https://github.com/gfx-rs/gfx/pull/2853 is merged first we can remove the crates.io patch. Co-authored-by: Rukai <rubickent@gmail.com>