bug fixed for references. for jsonarray ref compute error.

src/main/java/com/alibaba/fastjson/parser/DefaultJSONParser.java

@@ -467,6 +467,12 @@ public class DefaultJSONParser implements Closeable {
                                 : lexer.text.charAt(index));
                     }
                     ArrayList list = new ArrayList();
+
+                    final boolean parentIsArray = fieldName != null && fieldName.getClass() == Integer.class;
+                    if (!parentIsArray) {
+                        this.setContext(context);
+                    }
+                    
                     this.parseArray(list, key);
                     value = new JSONArray(list);
                     if (innerMap != null) {

src/test/java/com/alibaba/json/bvt/ref/RefTest22.java

@@ -0,0 +1,17 @@
+package com.alibaba.json.bvt.ref;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.parser.Feature;
+import junit.framework.TestCase;
+
+/**
+ * Created by wenshao on 16/8/23.
+ */
+public class RefTest22 extends TestCase {
+    public void test_ref() throws Exception {
+        String json = "{\"name\":\"123\",\"assetSize\":{},\"items\":[{\"id\":123}],\"refItems\":{\"$ref\":\"$.items[0]\"}}";
+        JSONObject root = JSON.parseObject(json);
+        assertSame(root.getJSONArray("items").get(0), root.getJSONObject("refItems"));
+    }
+}