Sorry, I didn't mean to put you on the spot :-) Yeah you'd need to install a compiler, various libraries and tools to be able to build form source with a patch. Unfortunately I'm not the best person to explain how to do that on Windows as I don't use it. Honestly it might be a bit too much new stuff to figure out at once just to test this small patch. What I'd be hoping for is confirmation that there are no weird unintended consequences or problems I'm not seeing since I'm writing blind patches based on documentation only, but it's probably too much to ask to figure out the whole development environment and then go on an open ended expedition looking for unknown problems.