Merge pull request #5410 from eclipse-ee4j/mojarra_issue_5408_micro_o…

…ptimization

Micro optimization to clarify intent of viewMap.clear() in setViewRoot()

impl/src/main/java/com/sun/faces/context/FacesContextImpl.java

@@ -424,7 +424,7 @@ public void setViewRoot(UIViewRoot root) {
         if (viewRoot != null && !viewRoot.equals(root)) {
             Map<String, Object> viewMap = viewRoot.getViewMap(false);
             if (viewMap != null) {
-                viewRoot.getViewMap().clear();
+                viewMap.clear();
             }
             RequestStateManager.clearAttributesOnChangeOfView(this);
         }