crash fix when removing sync info

1 files changed, 2 insertions, 1 deletions

diff --git a/libkcal/calendarlocal.cpp b/libkcal/calendarlocal.cpp
index 0eba6a9..52c298b 100644
--- a/libkcal/calendarlocal.cpp
+++ b/libkcal/calendarlocal.cpp
@@ -149,193 +149,194 @@ bool CalendarLocal::addEvent( Event *event )
 
   return true;
 }
 
 void CalendarLocal::deleteEvent( Event *event )
 {
     if ( mUndoIncidence ) delete mUndoIncidence;
     mUndoIncidence = event->clone();
     if ( mEventList.removeRef( event ) ) {
         setModified( true );
     }
 }
 
 
 Event *CalendarLocal::event( const QString &uid )
 {
 
   Event *event;
 
   for ( event = mEventList.first(); event; event = mEventList.next() ) {
     if ( event->uid() == uid ) {
       return event;
     }
   }
 
   return 0;
 }
 bool CalendarLocal::addTodoNoDup( Todo *todo )
 {
   Todo * eve;
     for ( eve = mTodoList.first(); eve ; eve = mTodoList.next() ) {
         if ( *eve == *todo ) {
             //qDebug("duplicate todo found! not inserted! ");
             return false;
         }
     }
     return addTodo( todo );
 }
 bool CalendarLocal::addTodo( Todo *todo )
 {
   mTodoList.append( todo );
 
   todo->registerObserver( this );
 
   // Set up subtask relations
   setupRelations( todo );
 
   setModified( true );
 
   return true;
 }
 
 void CalendarLocal::deleteTodo( Todo *todo )
 {
   // Handle orphaned children
     if ( mUndoIncidence ) delete mUndoIncidence;
     removeRelations( todo );
     mUndoIncidence = todo->clone();
 
   if ( mTodoList.removeRef( todo ) ) {
     setModified( true );
   }
 }
 
 QPtrList<Todo> CalendarLocal::rawTodos()
 {
   return mTodoList;
 }
 Todo *CalendarLocal::todo( QString syncProf, QString id )
 {
   Todo *todo;
   for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) {
       if ( todo->getID( syncProf ) == id ) return todo;
   }
 
   return 0;
 }
 void CalendarLocal::removeSyncInfo( QString syncProfile)
 {
     QPtrList<Incidence> all = rawIncidences() ;
     Incidence *inc;
     for ( inc = all.first(); inc; inc = all.next() ) {
         inc->removeID( syncProfile );
     }
     if ( syncProfile.isEmpty() ) {
         QPtrList<Event> el;
         Event *todo;
         for ( todo = mEventList.first(); todo; todo = mEventList.next() ) {
             if ( todo->uid().left( 15 ) == QString("last-syncEvent-") )
                     el.append( todo );
         }
         for ( todo = el.first(); todo; todo = el.next() ) {
            deleteIncidence ( todo );
         }
     } else {
         Event *lse = event( "last-syncEvent-"+ syncProfile);
-        deleteIncidence ( lse );
+        if ( lse )
+            deleteIncidence ( lse );
     }
 }
 QPtrList<Event> CalendarLocal::getExternLastSyncEvents()
 {
     QPtrList<Event> el;
     Event *todo;
     for ( todo = mEventList.first(); todo; todo = mEventList.next() ) {
         if ( todo->uid().left( 15 ) == QString("last-syncEvent-") )
             if ( todo->summary().left(3) == "E: " )
                 el.append( todo );
     }
 
     return el;
 
 }
 Event *CalendarLocal::event( QString syncProf,  QString id )
 {
   Event *todo;
   for ( todo = mEventList.first(); todo; todo = mEventList.next() ) {
       if ( todo->getID( syncProf ) == id ) return todo;
   }
 
   return 0;
 }
 Todo *CalendarLocal::todo( const QString &uid )
 {
   Todo *todo;
   for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) {
     if ( todo->uid() == uid ) return todo;
   }
 
   return 0;
 }
 QString CalendarLocal::nextSummary() const
 {
     return mNextSummary;
 }
 QDateTime CalendarLocal::nextAlarmEventDateTime()  const
 {
     return mNextAlarmEventDateTime;
 }
 void  CalendarLocal::checkAlarmForIncidence( Incidence * incidence, bool deleted)
 {
     //mNextAlarmIncidence
     //mNextAlarmDateTime
     //return mNextSummary;
     //return mNextAlarmEventDateTime;
     bool newNextAlarm = false; 
     bool computeNextAlarm = false;
     bool ok;
     int offset;
     QDateTime nextA;
     // QString nextSum;
     //QDateTime nextEvent;
     if ( mNextAlarmIncidence == 0 || incidence == 0 ) {
         computeNextAlarm = true;
     } else {
         if ( ! deleted ) {
             nextA = incidence->getNextAlarmDateTime(& ok, &offset ) ;
             if ( ok ) {
                 if ( nextA < mNextAlarmDateTime  ) {
                     deRegisterAlarm();
                     mNextAlarmDateTime = nextA;
                     mNextSummary  = incidence->summary();
                     mNextAlarmEventDateTime = nextA.addSecs(offset ) ; 
                     mNextAlarmEventDateTimeString = KGlobal::locale()->formatDateTime(mNextAlarmEventDateTime);
                     newNextAlarm = true;
                     mNextAlarmIncidence = incidence;
                 } else {
                     if ( incidence == mNextAlarmIncidence ) {
                         computeNextAlarm = true;
                     }
                 }
             } else {
                 if ( mNextAlarmIncidence == incidence ) {
                     computeNextAlarm = true;
                 }
             }
         } else { // deleted
             if ( incidence == mNextAlarmIncidence ) {
                 computeNextAlarm = true;
             }
         }
     }
     if ( computeNextAlarm ) {
         deRegisterAlarm();
         nextA = nextAlarm( 1000 );  
         if (! mNextAlarmIncidence ) {
             return;
         }
         newNextAlarm = true;
     }
     if ( newNextAlarm )
         registerAlarm();
 }
 QString CalendarLocal:: getAlarmNotification()