Expression.getVariableFullNames()返回结果bug

[zondacker]

如题，Expression.getVariableFullNames()在以下场景会返回不太正确的结果：
示例脚本：
Expression expr = instance.compile("let abc = new String('abc');", true);
System.out.println(expr.getVariableFullNames());

返回结果：
[String]

[killme2008]

Fixed in 5.3.2 https://github.com/killme2008/aviatorscript/releases/tag/aviator-5.3.2