The number of bytes coincide with the number of lines in the module so I am pretty sure it is \n\r and \r thing.
I would probably have let it slide if I had not thought it interfered with MW's normal, periodic page nulledits (I hope that kind of thing exists at all). The page I linked above is one of many pages that should have moved from one to another category due to a module modification I did before. Other pages that had unix style newlines did move automatically while this one did not (within a ~12-hour period), possibly because automatic null-edit was rejected as the system assumed it was going to actually change something(?).