Compacting a folder now does not loose the current message.

svn path=/trunk/kdenetwork/kmail/; revision=2980

kmmainwin.cpp

@@ -335,7 +335,9 @@ void KMMainWin::slotRemoveFolder()
 //-----------------------------------------------------------------------------
 void KMMainWin::slotCompactFolder()
 {
+  int idx = mHeaders->currentItem();
   if (mFolder) mFolder->compact();
+  mHeaders->setCurrentItem(idx);
 }