修复 区域为空拼接问题

xufenglei

2018-07-05 af95e3f15895995607604ecf0e757c48169795b3

 src/app/routes/devices/monitor-point/monitor-point-edit/monitor-point-edit.component.ts

@@ -32,7 +32,7 @@
    let _areas = null;
    if (areaNames != null) {
      _areas = {
       label: Object.values(areaNames).join('/'),
       label: Object.values(areaNames).filter(d=>d).join('/'),
       value: data.areaCode
      };
    }