Merge pull request #361 from DevExpress/fix_lint

Fix after tslint update

Author: anna-zhernovkova

tests/src/core/component.spec.ts

@@ -83,7 +83,7 @@ export class DxTestWidgetComponent extends DxComponent implements AfterViewInit,
     template: ''
 })
 export class TestContainerComponent {
-    visible: boolean = true;
+    visible = true;
     testOption: string;
     @ViewChildren(DxTestWidgetComponent) innerWidgets: QueryList<DxTestWidgetComponent>;
     testMethod() {