Fix crash in fast/canvas/canvas-empty-image-pattern.html
diff --git a/WebCore/platform/graphics/android/PatternAndroid.cpp b/WebCore/platform/graphics/android/PatternAndroid.cpp
index ff2b522..a787113 100644
--- a/WebCore/platform/graphics/android/PatternAndroid.cpp
+++ b/WebCore/platform/graphics/android/PatternAndroid.cpp
@@ -43,6 +43,8 @@
SkShader* Pattern::createPlatformPattern(const TransformationMatrix& ) const
{
SkBitmapRef* ref = tileImage()->nativeImageForCurrentFrame();
+ if (!ref)
+ return 0;
SkShader* s = SkShader::CreateBitmapShader(ref->bitmap(),
toTileMode(m_repeatX),
toTileMode(m_repeatY));