fix leak in new createproc

src/effects/SkColorFilterImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorFilterImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 74 matching lines @@
 
 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
 SkColorFilterImageFilter::SkColorFilterImageFilter(SkReadBuffer& buffer)
   : INHERITED(1, buffer) {
     fColorFilter = buffer.readColorFilter();
 }
 #endif
 
 SkFlattenable* SkColorFilterImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
-    return Create(buffer.readColorFilter(), common.getInput(0), &common.cropRect());
+    SkAutoTUnref<SkColorFilter> cf(buffer.readColorFilter());
+    return Create(cf, common.getInput(0), &common.cropRect());
 }
 
 void SkColorFilterImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeFlattenable(fColorFilter);
 }
 
 SkColorFilterImageFilter::~SkColorFilterImageFilter() {
     SkSafeUnref(fColorFilter);
 }
@@ skipping 33 matching lines @@
 bool SkColorFilterImageFilter::asColorFilter(SkColorFilter** filter) const {
     if (!cropRectIsSet()) {
         if (filter) {
             *filter = fColorFilter;
             fColorFilter->ref();
         }
         return true;
     }
     return false;
 }