tls: fix leak on invalid protocol method #308

Job	Run time
Build slim tarball	1m 42s
x86_64-linux: with shared libraries	28m 16s
aarch64-linux: with shared libraries	23m 47s
x86_64-darwin: with shared libraries	39m 53s
aarch64-darwin: with shared libraries	27m 27s
	2h 1m 5s

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