Port from queryExit to closeEvent, since there's always only one mainwindow.

Reviewed by Laurent Montel

blogilo/src/mainwindow.cpp

@@ -187,7 +187,7 @@ void MainWindow::slotCloseTabClicked()
     }
 }
 
-bool MainWindow::queryExit()
+void MainWindow::closeEvent(QCloseEvent *event)
 {
     writeConfigs();
     if ( !DBMan::self()->clearTempEntries() )
@@ -200,7 +200,7 @@ bool MainWindow::queryExit()
             DBMan::self()->saveTempEntry(*pst->currentPost(), pst->currentPostBlogId());
         }
     }
-    return true;
+    event->accept();
 }
 
 void MainWindow::setupActions()

blogilo/src/mainwindow.h

@@ -112,7 +112,7 @@ private slots:
 
 protected:
     void keyPressEvent( QKeyEvent * event );
-    virtual bool queryExit();
+    void closeEvent( QCloseEvent *event );
 
 private:
     void setCurrentBlog( int blog_id );