emulated poll: polling for nothing should still return error states

Andrew Wileyrequested to merge
ThatWileyGuy/libssh-mirror:polling-for-nothing-should-succeed into master

libssh will occasionally call poll with a single socket and no desired events (for example, after a write where no calls blocked). This should not be treated as an error.

Fixes #22 (closed)

Checklist

  • Commits have Signed-off-by: with name/author being identical to the commit author
  • Code modified for feature
  • Test suite updated with functionality tests
  • Test suite updated with negative tests
  • Documentation updated

Reviewer's checklist:

  • Any issues marked for closing are addressed
  • There is a test suite reasonably covering new functionality or modifications
  • Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTING.md
  • This feature/change has adequate documentation added
  • No obvious mistakes in the code
Edited by Andrew Wiley

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