fix

stmms-web/src/main/java/cn/com/qmth/stmms/admin/exam/InspectedController.java

@@ -316,7 +316,7 @@ public class InspectedController extends BaseExamController {
         }
         obj.accumulate("subjectCode", student.getSubjectCode());
         WebUser wu = RequestUtils.getWebUser(request);
-        if (student != null && subjectCheck(student.getSubjectCode(), wu)) {
+        if (subjectCheck(student.getSubjectCode(), wu)) {
             try {
                 lockService.watch(LockType.EXAM_SUBJECT, student.getExamId(), student.getSubjectCode());
                 lockService.waitlock(LockType.STUDENT, studentId);