fixbugs

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/utils/TaskLock.java

@@ -206,6 +206,7 @@ public class TaskLock {
 
         private void remove() {
             this.previous.next = this.next;
+            this.next.previous = this.previous;
         }
 
         private void append(Object id, int number, Object owner) {