解决图像编辑框关闭时内存泄漏的问题

app/scanner/dialog_imageeditor.cpp

@@ -32,6 +32,7 @@ Dialog_ImageEditor::Dialog_ImageEditor(QWidget *parent)
 
 Dialog_ImageEditor::~Dialog_ImageEditor()
 {
+    delete m_scene;
     delete ui;
 }
 
@@ -40,7 +41,8 @@ void Dialog_ImageEditor::setImage(const QImage &image)
     m_imageSize = image.size();
     m_dpi_x = image.dotsPerMeterX();
     m_dpi_y = image.dotsPerMeterY();
-    m_scene->addPixmap(QPixmap::fromImage(image));
+    QPixmap bitmap = QPixmap::fromImage(image);
+    m_scene->addPixmap(bitmap);
     on_btn_fit_clicked();
 }