Rust

Update gif_loader.rs #889

Job	Run time
android	21s
cargo-deny aarch64-apple-darwin	39s
Check wasm32 + wasm-bindgen	2m 26s
cargo-deny aarch64-linux-android	40s
Check wasm32+atomics	1m 24s
cargo-deny i686-pc-windows-gnu	37s
Format + check + test	2m 33s
cargo-deny i686-pc-windows-msvc	37s
cargo-deny i686-unknown-linux-gnu	38s
ios	22s
cargo-deny wasm32-unknown-unknown	37s
Run tests	2m 21s
cargo-deny x86_64-apple-darwin	39s
Check Windows	1m 40s
cargo-deny x86_64-pc-windows-gnu	39s
cargo-deny x86_64-pc-windows-msvc	43s
cargo-deny x86_64-unknown-linux-gnu	41s
cargo-deny x86_64-unknown-linux-musl	39s
cargo-deny x86_64-unknown-redox	45s
	19m 1s

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