fix bug 113474. be sure to check for empty nicknames when checking to see if a nickname needs updating.
fix bug 113474. be sure to check for empty nicknames when
checking to see if a nickname needs updating.

BUG: 113474


svn path=/branches/KDE/3.5/kdenetwork/kopete/; revision=466124

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