1 files changed, 5 insertions, 3 deletions

diff --git a/noncore/net/opieirc/ircsession.cpp b/noncore/net/opieirc/ircsession.cpp
index c8d7869..d87ff80 100644
--- a/noncore/net/opieirc/ircsession.cpp
+++ b/noncore/net/opieirc/ircsession.cpp
@@ -95,99 +95,101 @@ bool IRCSession::isSessionActive() {
 bool IRCSession::isLoggedIn() {
     return m_connection->isLoggedIn();
 }
 
 void IRCSession::endSession() {
     if (m_connection->isLoggedIn())
         quit(APP_VERSION);
     else
         m_connection->close();
 }
 
 void IRCSession::part(IRCChannel *channel) {
     m_connection->sendLine("PART " + channel->channelname() + " :" + APP_VERSION);
 }
 
 void IRCSession::setValidUsermodes(const QString &modes) {
     m_validUsermodes = modes;
 }
 
 void IRCSession::setValidChannelmodes(const QString &modes) {
     m_validChannelmodes = modes;
 }
 
 void IRCSession::updateNickname(const QString &oldNickname, const QString &newNickname) {
     QList<IRCChannel> channels;
     IRCOutput output;
     
     if (oldNickname == m_server->nick()) {
         m_server->setNick(newNickname);
         output = IRCOutput(OUTPUT_NICKCHANGE, tr("You are now known as %1").arg(newNickname));
         channels = m_channels;
     }
 
     else {
         IRCPerson *person = getPerson(oldNickname);
         
         if(!person) {
             emit outputReady(IRCOutput(OUTPUT_ERROR, tr("Nickname change of an unknown person")));
             return;
         }
         
         getChannelsByPerson(person, channels);
         output = IRCOutput(OUTPUT_NICKCHANGE, tr("%1 is now known as %2").arg(oldNickname).arg(newNickname));
     }
 
     QListIterator<IRCChannel> it(channels);
     for (;it.current(); ++it) {
         IRCChannelPerson *chanperson = it.current()->getPerson(oldNickname);
-        it.current()->removePerson(chanperson);
-        chanperson->setNick(newNickname);
-        it.current()->addPerson(chanperson);
+        if (chanperson) {
+            it.current()->removePerson(chanperson);
+            chanperson->setNick(newNickname);
+            it.current()->addPerson(chanperson);
+        }
     }
 
     emit updateChannels();
     output.addParam(new QString(newNickname));
     emit outputReady(output);
 }
 
 IRCChannel *IRCSession::getChannel(QString channelname) {
     QListIterator<IRCChannel> it(m_channels);
     for (; it.current(); ++it) {
         if (it.current()->channelname() == channelname) {
             return it.current();
         }
     }
     return 0;
 }
 
 IRCPerson *IRCSession::getPerson(QString nickname) {
     QListIterator<IRCPerson> it(m_people);
     for (; it.current(); ++it) {
         if (it.current()->nick() == nickname) {
             return it.current();
         }
     }
     return 0;
 }
 
 void IRCSession::getChannelsByPerson(IRCPerson *person, QList<IRCChannel> &channels) {
     QListIterator<IRCChannel> it(m_channels);
     for (; it.current(); ++it) {
         if (it.current()->getPerson(person->nick()) != 0) {
             channels.append(it.current());
         }
     }
 }
 
 void IRCSession::addPerson(IRCPerson *person) {
     m_people.append(person);
 }
 
 void IRCSession::addChannel(IRCChannel *channel) {
     m_channels.append(channel);
 }
 
 void IRCSession::removeChannel(IRCChannel *channel) {
     m_channels.remove(channel);
 }