Bug 1117594 - Crash on unexpected image format in ImageLayerD3D10::RenderLayer(). r=bas.

--HG--
extra : rebase_source : f99f778126dcad615b754a84dc4ca6e1c9d2578d

gfx/layers/d3d10/ImageLayerD3D10.cpp

@@ -304,6 +304,8 @@ ImageLayerD3D10::RenderLayer()
         (float)yuvImage->GetData()->mPicSize.width / yuvImage->GetData()->mYSize.width,
         (float)yuvImage->GetData()->mPicSize.height / yuvImage->GetData()->mYSize.height)
        );
+  } else {
+    MOZ_CRASH("unexpected image format");
   }
 
   bool resetTexCoords = image->GetFormat() == ImageFormat::PLANAR_YCBCR;