Fixed newly reported crashes (googe analytics)
- NullPointerException (@GeoTools:getArcInRadians:77) {main}
- NullPointerException (@ListXmlAdapter:getGroupView:99) {main}
- NullPointerException (@UsbConnection:isFTDIdevice:88) {MavLinkConnection-Connecting Thread}
Merge pull request #1077 from ne0fhyk/fix_reported_ga_crashes

Fixed newly reported crashes (googe analytics)