PuTTY bug unix-sigpipe

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summary: Unix Plink dies with SIGPIPE when a forwarded port closes
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: medium: This should be fixed one day.
present-in: r7735
fixed-in: r9359 66ea8dc1b94401dfa60abdb26918026f3230baaa (0.63)

If I set up a remote-to-local port forwarding, and use "nc -l" on the
local end and "nc" on the far end, killing the local "nc" causes Plink
to die with SIGPIPE.  It should just tidy up the forwarded connection
and carry on.
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(last revision of this bug record was at 2016-12-27 11:40:21 +0000)