fix bugs

stmms-web/src/main/java/cn/com/qmth/stmms/admin/thread/ScoreCalculateThread.java

@@ -105,8 +105,9 @@ public class ScoreCalculateThread implements Runnable {
                 statistics();
             }
             // 统分结束修改标记
-            examService.updateNeedCalculate(exam.getId(), false);
-            examService.updateProcess(exam.getId(), null);
+            exam.setNeedCalculate(false);
+            exam.setProcess(null);
+            examService.save(exam);
         } catch (Exception e) {
             log.error("calculate exception for examId=" + exam.getId(), e);
         } finally {