Merge pull request #307 from github/fixes/authentication-hang

Fix application hang during authentication

Author: shana

src/GitHub.Api/Authentication/LoginManager.cs

@@ -180,6 +180,13 @@ public async Task<LoginResultData> ContinueLogin(LoginResultData loginResultData
                 await credentialManager.Delete(host);
                 return new LoginResultData(LoginResultCodes.Failed, message, host);
             }
+            catch (Exception e)
+            {
+                logger.Debug(e, "Exception: {0}", e.Message);
+
+                await credentialManager.Delete(host);
+                return new LoginResultData(LoginResultCodes.Failed, e.Message, host);
+            }
         }
 
         /// <inheritdoc/>