Fix offsetting of rotated sprites drawn in the HUD by Lua

When v.getSpritePatch/v.getSprite2Patch was used to get a rotated sprite in Lua, it would add an extra 4 fracunits to the y offset that is not applied to non-rotated sprites. This offset is the reason why sprites with angle 0 appear to be misaligned compared to other angles, particularly when people make a rotating animation with a patch in HUD Lua scripts. To put it in short, this extra offset is definitely not needed for patches drawn in the HUD at all, so I've killed it.