Fix a crash happening due to a dangling pointer appearing when removing an input field in placemark selection mode.
Fix a crash happening due to a dangling pointer appearing when removing an input field in placemark selection mode.

svn path=/trunk/KDE/kdeedu/marble/; revision=1124596

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