Small fix related to correct way how to pass the cancellation token.

libraries/Microsoft.Bot.Builder.Dialogs/Prompts/OAuthPrompt.cs

@@ -144,8 +144,8 @@ public OAuthPrompt(string dialogId, OAuthPromptSettings settings, PromptValidato
 
             if (hasTimedOut)
             {
-                // if the token fetch request timesout, complete the prompt with no result.
-                return await dc.EndDialogAsync(cancellationToken).ConfigureAwait(false);
+                // if the token fetch request times out, complete the prompt with no result.
+                return await dc.EndDialogAsync(cancellationToken: cancellationToken).ConfigureAwait(false);
             }
             else
             {

tests/Microsoft.Bot.Builder.Dialogs.Tests/WaterfallTests.cs

@@ -408,7 +408,7 @@ private static async Task<DialogTurnResult> Waterfall5_Step1(WaterfallStepContex
         private static async Task<DialogTurnResult> Waterfall5_Step2(WaterfallStepContext stepContext, CancellationToken cancellationToken)
         {
             await stepContext.Context.SendActivityAsync(MessageFactory.Text("step2.2"), cancellationToken);
-            return await stepContext.EndDialogAsync(cancellationToken);
+            return await stepContext.EndDialogAsync(cancellationToken: cancellationToken);
         }
     }
 }