Fix spacing

Slab and Stair Recipe Matching.java

@Nullable
IBlockState findSlabVariant(World world, BlockPos pos, IBlockState stateIn)
{
    ItemStack stackIn = stateIn.getBlock().getPickBlock(stateIn, null, world, pos, null);
    if (!stackIn.isEmpty())
    {
        // Slab inventory shape
        InventoryCrafting craftMatrix = new InventoryCraftingEmpty();
        // todo: figure out which index positions match to a slab pattern
        for (int index : SLAB_INDEXES)
        {
            craftMatrix.setInventorySlotContents(index, stackIn.copy());
        }
        for (IRecipe recipe : ForgeRegistries.RECIPES.getValuesCollection())
        {
            if (recipe.matches(craftMatrix, world))
            {
                // Found matching recipe, try and extract a slab block
                ItemStack stackOut = recipe.getCraftingResult(craftMatrix);
                if (stackOut.getItem() instanceof ItemBlock)
                {
                    Block blockOut = ((ItemBlock) stackOut.getItem()).getBlock();
                    if (blockOut instanceof BlockSlab)
                    {
                        return blockOut.getDefaultState();
                    }
                }
                // Don't continue searching recipes
                return null;
            }
        }
    }
    return null;
}

@Nullable
IBlockState findStairVariant(World world, BlockPos pos, IBlockState stateIn)
{
    ItemStack stackIn = stateIn.getBlock().getPickBlock(stateIn, null, world, pos, null);
    if (!stackIn.isEmpty())
    {
        // Slab inventory shape
        InventoryCrafting craftMatrix = new InventoryCraftingEmpty();
        // todo: figure out which index positions match to a stair pattern
        for (int index : STAIR_INDEXES)
        {
            craftMatrix.setInventorySlotContents(index, stackIn.copy());
        }
        for (IRecipe recipe : ForgeRegistries.RECIPES.getValuesCollection())
        {
            if (recipe.matches(craftMatrix, world))
            {
                // Found matching recipe, try and extract a slab block
                ItemStack stackOut = recipe.getCraftingResult(craftMatrix);
                if (stackOut.getItem() instanceof ItemBlock)
                {
                    Block blockOut = ((ItemBlock) stackOut.getItem()).getBlock();
                    if (blockOut instanceof BlockStairs)
                    {
                        return blockOut.getDefaultState();
                    }
                }
                return null;
            }
        }
    }
    return null;
}