less memory allocation at delete picture

SnapmaticPicture.cpp

@@ -136,7 +136,6 @@ bool SnapmaticPicture::readingPicture()
     picFile->deleteLater();
     delete picFile;
     return picOk;
-
 }
 
 QString SnapmaticPicture::getSnapmaticPictureString(QByteArray snapmaticHeader)

SnapmaticWidget.cpp

@@ -75,8 +75,7 @@ void SnapmaticWidget::on_cmdDelete_clicked()
     int uchoice = QMessageBox::question(this, tr("Delete picture"), tr("You're sure to delete %1 from your Snapmatic pictures?").arg(picStr), QMessageBox::No | QMessageBox::Yes, QMessageBox::No);
     if (uchoice == QMessageBox::Yes)
     {
-        QFile pictureFile(picPath);
-        if (!pictureFile.exists())
+        if (!QFile::exists(picPath))
         {
             emit pictureDeleted();
         }