Fix incorrect reading of correct utf8 #2828

Job	Run time
build_versions (stable)	16s
Test	58s
build_versions (beta)	14s
Test	58s
Test (charset)	41s
build_versions (1.71.1)	17s
cargo-deny (aarch64-apple-ios)	19s
Test (charset)	48s
Test (cookies)	54s
cargo-deny (aarch64-linux-android)	19s
Test (cookies)	1m 3s
Test (socks-proxy)	41s
Docs	1m 42s
Test (socks-proxy)	51s
cargo-deny (i686-pc-windows-gnu)	18s
Test (gzip)	43s
cargo-deny (i686-pc-windows-msvc)	22s
Test (gzip)	52s
Test (brotli)	43s
Lint	28s
Test (brotli)	51s
cargo-deny (i686-unknown-linux-gnu)	20s
Test (json)	43s
Test (json)	51s
Test (native-tls)	48s
cargo-deny (wasm32-unknown-unknown)	19s
Test (native-tls)	55s
Test (rustls-no-provider)	57s
cargo-deny (x86_64-apple-darwin)	19s
cargo-deny (x86_64-apple-ios)	21s
cargo-deny (x86_64-pc-windows-gnu)	21s
cargo-deny (x86_64-pc-windows-msvc)	18s
cargo-deny (x86_64-unknown-linux-gnu)	19s
cargo-deny (x86_64-unknown-redox)	21s
	21m 10s

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