Checklist

• tests and code linting passes
• the commit message follows commit guidelines

Affected core subsystem(s)

test

Description of change

Wait for the data to be received by the socket before creating the
clean-up timer. This way, a possible (though unlikely) ECONNRESET
error can be avoided.

Failure in CI: https://ci.nodejs.org/job/node-test-binary-arm/RUN_SUBSET=6,nodes=pi1-raspbian-wheezy/1686/

1) test-net-settimeout.js
----------------------------------------------
# events.js:154
#       throw er; // Unhandled 'error' event
#       ^
# 
# Error: read ECONNRESET
#     at exports._errnoException (util.js:893:11)
#     at TCP.onread (net.js:550:26)

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