[MC-201374] Wrong position passed to getCollisionShape from CampfireBlock#isSmokingBlockAt

I ran into an odd bug randomly which I am pretty sure is just due to accidentally passing the wrong parameter to a method. Using forge names, the method isSmokingBlockAt in CampfireBlock seems to be passing the wrong position to getCollisionShape. With forge mappings the method looks like this:

public static boolean isSmokingBlockAt(World world, BlockPos pos) {
  for(int i = 1; i <= 5; ++i) {
     BlockPos blockpos = pos.down(i);
     BlockState blockstate = world.getBlockState(blockpos);
     if (isLit(blockstate)) {
        return true;
     }

     boolean flag = VoxelShapes.compare(SMOKING_SHAPE, blockstate.getCollisionShape(world, pos, ISelectionContext.dummy()), IBooleanFunction.AND);
     if (flag) {
        BlockState blockstate1 = world.getBlockState(blockpos.down());
        return isLit(blockstate1);
     }
  }

  return false;
}

and passes pos to blockstate#getCollisionShape. The issue is that BlockState is gotten from the world at blockpos and not pos, and likely doesn't even exist in the world at pos.