Avoid warning; if_let now part of language.
Avoid warning; if_let now part of language.

Bastacyclop/gfx,tanderegg/gfx,gfx-rs/gfx-rs,tanderegg/gfx,bvssvni/gfx-rs,tempbottle/gfx,aepsil0n/gfx-rs,alexcrichton/gfx,ColinKinloch/gfx,JohnColanduoni/gfx,davll/gfx,red75prime/gfx,sectopod/gfx-rs,mitchmindtree/gfx-rs,ColinKinloch/gfx,JohnColanduoni/gfx