fix two-finger zooming broken in commit 638bf07a3cd561fa9ac9f4293ad9bdcc5d451584
fix two-finger zooming broken in commit 638bf07a3cd561fa9ac9f4293ad9bdcc5d451584

quannt24/marble,quannt24/marble,Earthwings/marble,adraghici/marble,tucnak/marble,AndreiDuma/marble,oberluz/marble,adraghici/marble,adraghici/marble,utkuaydin/marble,David-Gil/marble-dev,oberluz/marble,David-Gil/marble-dev,probonopd/marble,adraghici/marble,tucnak/marble,AndreiDuma/marble,tzapzoor/marble,utkuaydin/marble,oberluz/marble,tzapzoor/marble,tzapzoor/marble,David-Gil/marble-dev,Earthwings/marble,tzapzoor/marble,tucnak/marble,probonopd/marble,tzapzoor/marble,quannt24/marble,utkuaydin/marble,AndreiDuma/marble,tzapzoor/marble,probonopd/marble,utkuaydin/marble,rku/marble,rku/marble,adraghici/marble,AndreiDuma/marble,AndreiDuma/marble,Earthwings/marble,AndreiDuma/marble,utkuaydin/marble,oberluz/marble,probonopd/marble,Earthwings/marble,rku/marble,probonopd/marble,rku/marble,Earthwings/marble,quannt24/marble,tzapzoor/marble,oberluz/marble,probonopd/marble,quannt24/marble,tucnak/marble,David-Gil/marble-dev,David-Gil/marble-dev,David-Gil/marble-dev,quannt24/marble,probonopd/marble,Earthwings/marble,tucnak/marble,tucnak/marble,rku/marble,oberluz/marble,quannt24/marble,tucnak/marble,adraghici/marble,rku/marble,tzapzoor/marble,utkuaydin/marble