Fix leak of SkGammas

src/core/SkColorSpace.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAtomics.h"
 #include "SkColorSpace.h"
 #include "SkColorSpacePriv.h"
@@ skipping 77 matching lines @@
         gammas = sk_ref_sp(gStandardGammas);
 
         if (xyz_almost_equal(toXYZD50, gSRGB_toXYZD50)) {
             return SkColorSpace::NewNamed(kSRGB_Named);
         } else if (xyz_almost_equal(toXYZD50, gAdobeRGB_toXYZD50)) {
             return SkColorSpace::NewNamed(kAdobeRGB_Named);
         }
     }
 
     if (!gammas) {
-        gammas = sk_ref_sp(new SkGammas(gammaVals[0], gammaVals[1], gammaVals[2]));
+        gammas = sk_sp<SkGammas>(new SkGammas(gammaVals[0], gammaVals[1], gammaVals[2]));
     }
     return sk_sp<SkColorSpace>(new SkColorSpace(gammas, toXYZD50, kUnknown_Named));
 }
 
 sk_sp<SkColorSpace> SkColorSpace::NewNamed(Named named) {
     static SkOnce sRGBOnce;
     static SkColorSpace* sRGB;
     static SkOnce adobeRGBOnce;
     static SkColorSpace* adobeRGB;
 
@@ skipping 629 matching lines @@
                 }
             }
 
         }
         default:
             break;
     }
 
     return_null("ICC profile contains unsupported colorspace");
 }