forward port:

Fix crash during a "insert file" in the composer.
Patch provided by Goffredo Baroncelli and approved by Don.

svn path=/trunk/KDE/kdepim/; revision=497018

kmcomposewin.cpp

@@ -2666,7 +2666,7 @@ void KMComposeWin::slotInsertFile()
     while ((uint)urls.count() > mMaxRecentFiles)
       urls.erase( urls.fromLast() );
     while ((uint)encodings.count() > mMaxRecentFiles)
-      urls.erase( encodings.fromLast() );
+      encodings.erase( encodings.fromLast() );
     // sanity check
     if (urls.count() != encodings.count()) {
       urls.clear();