fix(build): fixed issues with optimized build, fixes #6096

public/app/features/templating/interval_variable.ts

@@ -28,7 +28,7 @@ export class IntervalVariable implements Variable {
     auto_count: 30,
   };
 
-  /** @ngInject */
+  /** @ngInject **/
   constructor(private model, private timeSrv, private templateSrv, private variableSrv) {
     assignModelProperties(this, model, this.defaults);
     this.refresh = 2;