[cs] don't generate "unchecked" for empty blocks, add some newlines
[cs] don't generate "unchecked" for empty blocks, add some newlines

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe