API: temporaryEditor --> isTemporary

Reviewed-by: Daniel Molkentin <daniel.molkentin@nokia.com>

src/plugins/coreplugin/mainwindow.cpp

@@ -897,6 +897,7 @@ bool MainWindow::showOptionsDialog(const QString &category,
 
 void MainWindow::saveAll()
 {
+    bool success;
     m_fileManager->saveModifiedFiles(m_fileManager->modifiedFiles());
     emit m_coreImpl->saveSettingsRequested();
 }