Ignore SIGPIPE signals on write() failures. We already check for write() failures and handle EPIPE. Failure to handle SIGPIPE was resulting in rpc.lockd terminating.
Ignore SIGPIPE signals on write() failures.
We already check for write() failures and handle EPIPE.
Failure to handle SIGPIPE was resulting in rpc.lockd terminating.

PR:		bin/97768
Reported by:	Gea-Suan Lin <gslin at csie dot nctu dot edu dot tw>
MFC after:	1 day

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