Don't leak fragment processor in SkColorFilter::asFragmentProcessors implementations.

src/effects/SkColorFilters.cpp

 /*
  * Copyright 2006 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 "SkBlitRow.h"
 #include "SkColorFilter.h"
 #include "SkColorPriv.h"
@@ skipping 351 matching lines @@
     return ModeColorFilterEffect::Create(color, mode);
 }
 
 bool SkModeColorFilter::asFragmentProcessors(GrContext*,
                                              SkTDArray<GrFragmentProcessor*>* array) const {
     if (SkXfermode::kDst_Mode != fMode) {
         GrFragmentProcessor* frag = ModeColorFilterEffect::Create(SkColor2GrColor(fColor), fMode);
         if (frag) {
             if (array) {
                 *array->append() = frag;
+            } else {
+                frag->unref();
+                SkDEBUGCODE(frag = NULL;)
             }
             return true;
         }
     }
     return false;
 }
 
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 84 matching lines @@
                     byte_to_scale(SkColorGetG(mul)),
                     byte_to_scale(SkColorGetB(mul)),
                     1);
     matrix.postTranslate(SkIntToScalar(SkColorGetR(add)),
                          SkIntToScalar(SkColorGetG(add)),
                          SkIntToScalar(SkColorGetB(add)),
                          0);
     return SkColorMatrixFilter::Create(matrix);
 }