Do not use dynamic_cast if RTTI is disabled.
Review URL: https://codereview.appspot.com/7250043

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1808 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/Renderer9.cpp b/src/libGLESv2/renderer/Renderer9.cpp
index e05d875..be10afd 100644
--- a/src/libGLESv2/renderer/Renderer9.cpp
+++ b/src/libGLESv2/renderer/Renderer9.cpp
@@ -164,7 +164,7 @@
 
 Renderer9 *Renderer9::makeRenderer9(Renderer *renderer)
 {
-    ASSERT(dynamic_cast<rx::Renderer9*>(renderer) != NULL);
+    ASSERT(HAS_DYNAMIC_TYPE(rx::Renderer9*, renderer));
     return static_cast<rx::Renderer9*>(renderer);
 }