Lua : minor string metatable semicolon fix

std/lua/_std/String.hx

@@ -35,8 +35,8 @@ class String {
 	}
 
 	static function __init__() : Void untyped{
-		__lua__("getmetatable('').__index = String.__index");
-		__lua__("getmetatable('').__add = function(a,b) return Std.string(a)..Std.string(b) end");
+		__lua__("getmetatable('').__index = String.__index;");
+		__lua__("getmetatable('').__add = function(a,b) return Std.string(a)..Std.string(b) end;");
 	}
 
 	@:keep