Add a missing return in Eigencraft redstone (#4621)

Spigot-Server-Patches/Optimize-redstone-algorithm.patch

@@ -995,6 +995,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private void updateSurroundingRedstone(World worldIn, BlockPosition pos, IBlockData state, BlockPosition source) {
 +        if (worldIn.paperConfig.useEigencraftRedstone) {
 +            turbo.updateSurroundingRedstone(worldIn, pos, state, source);
++            return;
 +        }
 +        a(worldIn, pos, state);
 +    }