* Don't crash if KImageIO::typeForMime() returns an empty list
  [BTW, that method should be renamed to KImageIO::type___s___ForMime()]

* kpDocument::getPixmapFile()
  - Don't crash on null KMimeType::Ptr deref
  - Use KMimeType::findByUrl(), instead of findByFileContent(), to mimick the
    KolourPaint/KDE3 behavior (note that KDE3's call to findByUrl() actually passed the
    temp file, not the URL, which is a bit bogus since there's no gaurantee
    that the temp file would have the same extension)

* kpDocumentSaveOptionsWidget::updatePreview()
  - Ignore any failed saves (we don't backport to KDE3 since the bug is
    harmless since the failed saving will be discovered as soon as the user
    presses the final OK button in KFileDialog)


svn path=/trunk/KDE/kdegraphics/kolourpaint/; revision=723632