fix signal slot connection
fixes warnings
QObject::connect: No such slot KActionSelector::itemDoubleClicked(QListWidgetItem *) in /home/cullmann/projects/kde/src/kwidgetsaddons/src/kactionselector.cpp:146 QObject::connect: No such slot KActionSelector::itemDoubleClicked(QListWidgetItem *) in /home/cullmann/projects/kde/src/kwidgetsaddons/src/kactionselector.cpp:147