NN_SNDFD/NN_RCVFD/NN_ERRFD are created immediately on socket creation
NN_SNDFD/NN_RCVFD/NN_ERRFD are created immediately on socket creation

Signed-off-by: Martin Sustrik <4dd6061be1198639e8b05ce4fd5ead7a0dcaa0f4@250bpm.com>

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