Fix error when version is None
Fix error when version is None

Logs were reporting:

Failure instance: Traceback: <type 'exceptions.AttributeError'>: StrictVersion instance has no attribute 'version'
/Volumes/LBRY/LBRY.app/Contents/Resources/lib/python2.7/lbrynet/lbrynet_daemon/DaemonServer.py:121:requestReceived
twisted/web/server.pyc:183:process
twisted/web/server.pyc:234:render
/Volumes/LBRY/LBRY.app/Contents/Resources/lib/python2.7/lbrynet/lbrynet_daemon/Daemon.py:450:render
--- <exception caught here> ---
twisted/internet/defer.pyc:150:maybeDeferred
/Volumes/LBRY/LBRY.app/Contents/Resources/lib/python2.7/lbrynet/lbrynet_daemon/Daemon.py:1561:jsonrpc_version
/Volumes/LBRY/LBRY.app/Contents/Resources/lib/python2.7/lbrynet/core/utils.py:39:version_is_greater_than
distutils/version.pyc:140:__cmp__

lbryio/lbry,zestyr/lbry,lbryio/lbry,lbryio/lbry,zestyr/lbry,zestyr/lbry