don't mix tabs and whitespaces
don't mix tabs and whitespaces

Change-Id: Ibd71956687d8390d700f01e77e6779e7323f0f26
Reviewed-on: http://review.couchbase.org/36772
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Li Yang <b23b5fb240ae87c71e4667a21ecd9f27d5443975@gmail.com>

dkao-cb/perfrunner,pavel-paulau/perfrunner,EricACooper/perfrunner,couchbase/perfrunner,couchbase/perfrunner,hsharsha/perfrunner,vmx/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,thomas-couchbase/perfrunner,EricACooper/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,vmx/perfrunner,dkao-cb/perfrunner,thomas-couchbase/perfrunner,hsharsha/perfrunner,mikewied/perfrunner,EricACooper/perfrunner,PaintScratcher/perfrunner,EricACooper/perfrunner,mikewied/perfrunner,PaintScratcher/perfrunner,pavel-paulau/perfrunner