Fixed more fuzzer issues

src/core/SkOrderedReadBuffer.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkErrorInternals.h"
@@ skipping 249 matching lines @@
         if (index) {
             SkDebugf("====== typeface index %d\n", index);
         }
         return NULL;
     } else {
         SkASSERT(fTFArray);
         return fTFArray[index - 1];
     }
 }
 
+bool SkOrderedReadBuffer::isAvailable(size_t size) const {
+    return (size <= SK_MaxU32) && fReader.isAvailable(static_cast<uint32_t>(size));
+}
+
 SkFlattenable* SkOrderedReadBuffer::readFlattenable(SkFlattenable::Type ft) {
     //
     // TODO: confirm that ft matches the factory we decide to use
     //
 
     SkFlattenable::Factory factory = NULL;
 
     if (fFactoryCount > 0) {
         int32_t index = fReader.readU32();
         if (0 == index) {
@@ skipping 28 matching lines @@
         if (sizeRecorded != sizeRead) {
             // we could try to fix up the offset...
             sk_throw();
         }
     } else {
         // we must skip the remaining data
         fReader.skip(sizeRecorded);
     }
     return obj;
 }