cwclientlib #4842353 rqlio should not crash if None is given when no kwarg needed [validation pending]

it currently ends up with AttributeError: 'NoneType' object has no attribute 'items'

prioritynormal
typebug
done in0.3.0
load1.000
load left0.000
closed by#ac428a09c350 don't crash if None given when no argument is required. Closes #4842353
patchdon't crash if None given when no argument is required. Closes #4842353 [applied]