Really fix valgrind issue

src/gpu/GrDrawState.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 "GrDrawState.h"
 
 #include "GrBlend.h"
@@ skipping 68 matching lines @@
     fDrawFace = that.fDrawFace;
     fGeometryProcessor.reset(SkSafeRef(that.fGeometryProcessor.get()));
     fXPFactory.reset(SkRef(that.getXPFactory()));
     fColorStages = that.fColorStages;
     fCoverageStages = that.fCoverageStages;
 
     fHints = that.fHints;
 
     fColorProcInfoValid = that.fColorProcInfoValid;
     fCoverageProcInfoValid = that.fCoverageProcInfoValid;
+    fColorCache = that.fColorCache;
+    fCoverageCache = that.fCoverageCache;
     if (fColorProcInfoValid) {
         fColorProcInfo = that.fColorProcInfo;
     }
     if (fCoverageProcInfoValid) {
         fCoverageProcInfo = that.fCoverageProcInfo;
     }
     return *this;
 }
 
 void GrDrawState::onReset(const SkMatrix* initialViewMatrix) {
@@ skipping 319 matching lines @@
             coverage = 0;
         } else {
             flags = kRGBA_GrColorComponentFlags;
         }
         fCoverageProcInfo.calcWithInitialValues(fCoverageStages.begin(), this->numCoverageStages(),
                                                 coverage, flags, true, fGeometryProcessor.get());
         fCoverageProcInfoValid = true;
         fCoverageCache = coverage;
     }
 }