Don't call the onError() method of the endpoint if the WebSocket close message cannot be sent for abnormal closure as this is not unexpected.
Don't call the onError() method of the endpoint if the WebSocket close message cannot be sent for abnormal closure as this is not unexpected.

git-svn-id: 79cef5a5a257cc9dbe40a45ac190115b4780e2d0@1532722 13f79535-47bb-0310-9956-ffa450edef68

Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4,Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4