Fixed a few places where uninitialized memory could have been read

samplecode/SampleFilterFuzz.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkBicubicImageFilter.h"
 #include "SkBitmapDevice.h"
 #include "SkBitmapSource.h"
@@ skipping 13 matching lines @@
 #include "SkOffsetImageFilter.h"
 #include "SkPerlinNoiseShader.h"
 #include "SkRandom.h"
 #include "SkRectShaderImageFilter.h"
 #include "SkTileImageFilter.h"
 #include "SkView.h"
 #include "SkXfermodeImageFilter.h"
 #include <stdio.h>
 #include <time.h>
 
+//#define SK_ADD_RANDOM_BIT_FLIPS
+//#define SK_FUZZER_IS_VERBOSE
+
 static const uint32_t kSeed = (uint32_t)(time(NULL));
 static SkRandom gRand(kSeed);
 static bool return_large = false;
 static bool return_undef = false;
 
 static const int kBitmapSize = 24;
 
 static int R(float x) {
     return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x);
 }
@@ skipping 308 matching lines @@
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ImageFilterFuzzView; }
 static SkViewRegister reg(MyFactory);