Fix clippy warning (#3081) #1043

Job	Run time
Build docs	32s
Test (macOS)	1m 15s
Examples	2m 39s
Check minimal versions	30s
MSRV	0s
Test (nightly)	1m 32s
Test (stable)	2m 37s
Test (beta)	2m 26s
Test (Windows)	4m 11s
Test (native-tls)	3m 46s
Test (no default features)	39s
Test (no cache)	2m 5s
Test (no gateway)	1m 33s
Test (unstable Discord API features)	2m 35s
Test (zlib compression)	2m 18s
Test (zstd compression)	2m 25s
Test (zlib and zstd compression)	2m 48s
Test (chrono, chrono)	1m 30s
Test (unstable API + typesize, default unstable typesize, true)	46s
Test (builder without model, builder, true)	23s
Test (unstable Discord API (no default features), unstable, true)	23s
	36m 53s

Provide feedback