fix bug in dataview causing model benchmark test to throw an error
fix bug in dataview causing model benchmark test to throw an error

iCoreSolutions/SlickGrid,cheminfo/SlickGrid,RobertoMalatesta/SlickGrid,6pac/SlickGrid,jesenko/SlickGrid,iCoreSolutions/SlickGrid,manju-reddys/SlickGrid,gbark/SlickGrid,manju-reddys/SlickGrid,cheminfo/SlickGrid,cheminfo/SlickGrid,6pac/SlickGrid,yamass/SlickGrid,jesenko/SlickGrid,yamass/SlickGrid,RobertoMalatesta/SlickGrid