Dragged URL contains a slash at the end on Mac but not on Linux

See attached compilable demo. Simply drag and drop a folder on the widget at the top and see result at the bottom.

When a directory is dropped and mime data is obtained, QUrl::toLocalFile() returns a slash at the end of the string on Mac OS X 10.9. However, on linux, no such slash is present at the end. This is inconsistent behavior.