Fix crash in the services dialog when trying to click on an empty list
Fix crash in the services dialog when trying to click on an empty list

svn path=/trunk/kdenetwork/kopete/; revision=235375

Jtalk/kopete-fork-xep0136,Jtalk/kopete-fork-xep0136,Jtalk/kopete-fork-xep0136,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,josh-wambua/kopete,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,josh-wambua/kopete,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,josh-wambua/kopete,josh-wambua/kopete