fix(module:date-picker): fix open next show error when set minDate ma… (

#256)

* fix(module:date-picker): fix open next show error when set minDate maxDate

components/date-picker/date-picker.component.ts

@@ -719,7 +719,7 @@ export class DatePickerComponent implements OnInit, OnDestroy, AfterViewInit {
     this.checkMode(this.options.mode);
     const value = this.transformDateFormat(this.options.value).split('-');
     if (value.length > 0) {
-      this.currentTime = value.map(item => {
+      this.current_time = this.currentTime = value.map(item => {
         return parseInt(item, 0);
       });
     }