Fix UB during vulkan graphics pipeline creationr, for use in veloren.

Merge gfx-rs#2528

2528: First release cleanup r=kvark a=kvark

Related - gfx-rs/d3d12-rs#7

Co-authored-by: Dzmitry Malyshau <[email protected]>
Co-authored-by: Dzmitry Malyshau <[email protected]>