fix decoding extra empty frame #2271

Job	Run time
Check Style	12s
unstable features	57s
Android	34s
linux / stable	43s
MSRV	1m 20s
linux / nightly	1m 20s
linux / beta	53s
WASM	53s
macOS / stable	41s
windows / stable-x86_64-msvc	3m 31s
windows / stable-i686-msvc	3m 25s
windows / stable-x86_64-gnu	11m 48s
windows / stable-i686-gnu	11m 54s
feat.: default-tls disabled	46s
feat.: rustls-tls	50s
feat.: rustls-tls-manual-roots	35s
feat.: rustls-tls-native-roots	42s
feat.: rustls-tls-no-provider	43s
feat.: native-tls	42s
feat.: default-tls and rustls-tls	43s
feat.: rustls-tls and rustls-tls-no-provider	25s
feat.: cookies	47s
feat.: blocking	1m 16s
feat.: blocking only	58s
feat.: gzip	1m 6s
feat.: brotli	54s
feat.: deflate	55s
feat.: json	49s
feat.: multipart	52s
feat.: stream	49s
feat.: socks/default-tls	52s
feat.: socks/rustls-tls	45s
feat.: hickory-dns	1m 4s
feat.: zstd	52s
Docs	1m 45s
CI is green	1s
	57m 22s

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