tcp: Add SIGPIPE on sendmsg for a broken connection #1227

Job	Run time
build-minimal-sysroots (x86_64)	1m 34s
build-minimal-sysroots (riscv64)	1m 29s
build-minimal-sysroots (arm64)	1m 11s
build-toolchains (ubuntu-latest, x86_64, gnu)	24m 20s
build-toolchains (ubuntu-latest, riscv64, gnu)	22m 56s
build-toolchains (ubuntu-latest, arm64, gnu)	18m 9s
build-toolchains (ubuntu-20.04, x86_64, gnu)	29s
build-toolchains (ubuntu-20.04, riscv64, gnu)	21s
build-toolchains (ubuntu-20.04, arm64, gnu)	18s
build-toolchains (ubuntu-latest, llvm, all)	1h 57m 26s
build-llvm	0s
build-riscv	0s
build-arm64	0s
build	0s
build-llvm-riscv64	0s
build-llvm-arm64	0s
run-riscv	0s
run-riscv64-llvm	0s
run-x86_64	0s
run-x86_64-llvm	0s
	3h 8m 13s

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