QTextImageHandler findAtNxFileOrResource() strips file: scheme

I have subclassed QTextBrowser to override ::loadResource()

I start my QTextBrowser with my own special URL scheme  mything://home

This triggers my ::loadResource() to load some preset HTML content.

The content includes <img src='file:something.png'>

I want to load this file from disk my own special way, and I handle that in ::loadResource()

The problem is qtextimagehandler.cpp findAtNxFileOrResource() strips the file: scheme from the URL, so by the time it reaches my ::loadResource(),

the url is now mything://home/something.png

ie the document context's URL path has been prepended to the stripped image URL.

I have patched my QT with the attached patch, and it appears to work for me.

When the function detects the file: scheme, it remembers and re-adds the scheme before returning the new file location.