Fix build with -no-rtti

WebCore was unable to build with -no-rtti since 82d8a5c8

Change-Id: I52dbd9b8db6c3b44ebad9e2518d89bdbe1430c3a
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/Source/WebCore/platform/graphics/qt/ImageBufferDataQt.cpp b/Source/WebCore/platform/graphics/qt/ImageBufferDataQt.cpp
index 1235ce690..aae31567f 100644
--- a/Source/WebCore/platform/graphics/qt/ImageBufferDataQt.cpp
+++ b/Source/WebCore/platform/graphics/qt/ImageBufferDataQt.cpp
@@ -202,6 +202,7 @@ void ImageBufferDataPrivateAccelerated::draw(GraphicsContext* destContext, Color
                                              const FloatRect& srcRect, CompositeOperator op, BlendMode blendMode,
                                              bool useLowQualityScale, bool /*ownContext*/)
 {
+#if !defined(QT_NO_DYNAMIC_CAST)
     if (destContext->isAcceleratedContext()) {
         invalidateState();
 
@@ -240,6 +241,7 @@ void ImageBufferDataPrivateAccelerated::draw(GraphicsContext* destContext, Color
             return;
         }
     }
+#endif
     RefPtr<Image> image = StillImage::create(QPixmap::fromImage(toQImage()));
     destContext->drawImage(image.get(), styleColorSpace, destRect, srcRect, op, blendMode,
                            DoNotRespectImageOrientation, useLowQualityScale);