Minor fix

Author: Stephane Landelle

providers/grizzly/src/main/java/org/asynchttpclient/providers/grizzly/filters/AsyncHttpClientFilter.java

@@ -470,10 +470,8 @@ private static boolean isWSRequest(final UriComponents requestUri) {
     private static void convertToUpgradeRequest(final HttpTxContext ctx) {
 
         UriComponents originalUri = ctx.getRequestUri();
-        String newScheme = originalUri.getScheme().equalsIgnoreCase("https")? "wss" : "ws";
-        ctx.setRequestUri(originalUri.withNewScheme(newScheme));
-        
-        ctx.setWsRequestURI(ctx.getRequestUri());
+        String newScheme = originalUri.getScheme().equalsIgnoreCase("https") ? "wss" : "ws";
+        ctx.setWsRequestURI(originalUri);
         ctx.setRequestUri(originalUri.withNewScheme(newScheme));
     }