修复科目管理导出功能（排序问题）

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/exam/service/impl/ExamQuestionServiceImpl.java

@@ -146,7 +146,9 @@ public class ExamQuestionServiceImpl extends BaseQueryService<ExamQuestion> impl
         Page<ExamQuestion> result = questionDao.findAll(buildSpecification(query), query);
         fillResult(result, query);
         if (result != null) {
-            List<ExamQuestion> list = questionSort(query.getResult());
+            List<ExamQuestion> list = new ArrayList<ExamQuestion>();
+            list.addAll(query.getResult());
+            list = questionSort(list);
             query.setResult(list);
         }
         return query;