Building with disabled RTTI fails

When making debug build ot Qt it fails on:
qtwebkit\Source\WebCore\platform\graphics\texmap\GraphicsLayerTextureMapper.cpp:470

because of ASSERT() that use dynamic_cast
ASSERT(dynamic_cast<TextureMapperTiledBackingStore*>(m_backingStore.get()));

This error can be easy avoided if using preprocessor check for QT_NO_DYNAMIC_CAST

If more clean fix is needed I will let someone else to find it.

P.S. The wildcard* will be ate when I post this...