JSONPath eval throw Exception

//1.加载json
```java
String text = ("{code:1,msg:'Hello world',data:{list:[1,2,3,4,5], ary2:[{a:2},{a:3,b:{c:'ddd'}}]}}");
JSONObject obj = JSON.parseObject(text);

JSONPath.extract(text,"$.data.list[?(@ in $..ary2[0].a)]");

long start = System.currentTimeMillis();
for(int i=0,len=1000000; i

Start with JSONPathTest2.test42 and the reported calls to JSONPath.extract and JSONPath.eval, then inspect JSONPath.of and JSONPath.parseFilter at the stack-trace locations. Run the supplied reproducer and verify that the JSONPath expression no longer raises the reported syntax error.

Written by the indexing model from the issue text.