D26364: SlaveBase::dispatchLoop: Fix timeout calculation

[Kevin Funk]

kfunk added reviewers: chinmoyr, davidedmundson, dfaure.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D26364

To: kfunk, chinmoyr, davidedmundson, dfaure
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns