If all four corners of the profile picture are transparent then remove the circle mask

Discord loves circular profile pictures and there's nothing wrong with that, however some people might want to add a PNG image that would look much better without Discord chopping off it's corners.
I was thinking about this problem and I came to the conclusion that this problem could be solved with this solution:
If all four corners (corner pixels) are fully transparent (Alpha channel 0) then the circular mask (the thing that chops off the corners of the profile picture) should not be used on that particular avatar.