File fix-prevent-blocking.patch of Package AppImageUpdate

diff -ruNp a/src/qt-ui/main.cpp b/src/qt-ui/main.cpp
--- a/src/qt-ui/main.cpp
+++ b/src/qt-ui/main.cpp
@@ -89,6 +89,7 @@ int main(int argc, char** argv) {
                 QDir::currentPath(),
                 "AppImage (*.appimage *.AppImage);;All files (*)"
             );
+            app.processEvents();
             if (pathToAppImage.isNull()) {
                 cerr << "No file selected, exiting." << std::endl;
                 return 1;