If we fail to contruct the Pdf Image Shader, mark the object as busted, and dn't try to remove it f…

src/pdf/SkPDFShader.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkPDFShader.h"
@@ skipping 426 matching lines @@
     SkTDArray<SkPDFObject*> fResources;
     SkAutoTDelete<const SkPDFShader::State> fState;
 
     SkPDFStream* makePSFunction(const SkString& psCode, SkPDFArray* domain);
 };
 
 class SkPDFImageShader : public SkPDFStream, public SkPDFShader {
 public:
     explicit SkPDFImageShader(SkPDFShader::State* state);
     virtual ~SkPDFImageShader() {
-        RemoveShader(this);
+        if (isValid()) {
+            RemoveShader(this);
+        }
         fResources.unrefAll();
     }
 
     virtual bool isValid() { return size() > 0; }
 
     void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
                       SkTSet<SkPDFObject*>* newResourceObjects) {
         GetResourcesHelper(&fResources.toArray(),
                            knownResourceObjects,
                            newResourceObjects);
@@ skipping 497 matching lines @@
         fPixelGeneration = fImage.getGenerationID();
     } else {
         fColorData.set(sk_malloc_throw(
                     fInfo.fColorCount * (sizeof(SkColor) + sizeof(SkScalar))));
         fInfo.fColors = reinterpret_cast<SkColor*>(fColorData.get());
         fInfo.fColorOffsets =
             reinterpret_cast<SkScalar*>(fInfo.fColors + fInfo.fColorCount);
         shader.asAGradient(&fInfo);
     }
 }