Fix wrong logic for redirecting websocket

Author: jfarcand

src/main/java/com/ning/http/client/providers/netty/NettyAsyncHttpProvider.java

@@ -2004,7 +2004,7 @@ private boolean redirect(Request request,
                     final boolean initialConnectionKeepAlive = future.getKeepAlive();
                     future.setURI(uri);
                     String newUrl = uri.toString();
-                    if (future.getNettyRequest().getUri().startsWith(WEBSOCKET)) {
+                    if (request.getUrl().startsWith(WEBSOCKET)) {
                         newUrl = newUrl.replace(HTTP, WEBSOCKET);
                     }