fix type

ampproject · Oct 14, 2016 · e2a6a27 · e2a6a27
1 parent 27f10e9
commit e2a6a27
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/service/history-impl.js b/src/service/history-impl.js
@@ -595,7 +595,7 @@ export class HistoryBindingVirtual_ {
     /** @private {!Promise} */
     this.awaitPoppingPromise_ = Promise.resolve();
 
-    /** @private {!function(*)) */
+    /** @private {?function(*)) */
     this.awaitPoppingPromiseResolver_ = null;
   }