Fixed a lighting bug that would make the whole map become blindingly white.

PSA for ingame-editor map-makers: If you use lights, make sure every one of their settings are whole numbers only!! Computers running on different languages will interpret a decimal point differently, which means that there is a chance that a "." or a "," will be misinterpreted by another user's system; this will cause a light or ladder object to go from being a reasonable 3.75m setting to a 375m one. In the case of lights, this breaks the lighting engine! Until this silly bug is resolved, take care to bypass it with the method explained above.