If an image source in HTML is specified via local file name or resource
path (i.e. without qrc prefix), then the correct image is loaded.
With file:/ or qrc:/ schema however, the image is either not loaded at
all, or the 2x image is not loaded. The qt_findAtNxFile helper in
qicon.cpp gets a URL path, but expects a file path (that can be tested
with QFile::exists).
Task-number: QTBUG-109212
Pick-to: 6.5 6.4 6.2
Change-Id: Ibcf687c69b3e53a10f21d718d28c8177a02d6be6
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
c9cf4037ca