Set unlimited image size so it doesn't fail to load big images

mainwindow.cpp

@@ -62,6 +62,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     _openFilter.append("*.fit *.fits *.xisf *.cr2 *.cr3 *.nef *.dng)");
     _openFilter.append(tr(";;All files (*)"));
     nameFilter.append({"fit", "fits", "xisf", "cr2", "cr3", "nef", "dng"});
+    QImageReader::setAllocationLimit(0);
 
     m_info = new ImageInfo(this);
     QDockWidget *infoDock = new QDockWidget(tr("Image info"), this);