Auto merge of #1284 - ucarion:ucarion-fix-index-buffer-typo, r=kvark
Auto merge of #1284 - ucarion:ucarion-fix-index-buffer-typo, r=kvark

Fix typo and remove trailing whitespace in slice.rs

Fixes #1283 .

ColinKinloch/gfx,ColinKinloch/gfx,davll/gfx,gfx-rs/gfx-rs