fix for valgrind preAbandonGpuContext

include/gpu/GrCoordTransform.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrCoordTransform_DEFINED
 #define GrCoordTransform_DEFINED
 
@@ skipping 24 matching lines @@
     kDevice_GrCoordSet,
 };
 
 /**
  * A class representing a linear transformation from one of the built-in coordinate sets (local or
  * position). GrProcessors just define these transformations, and the framework does the rest of the
  * work to make the transformed coordinates available in their fragment shader.
  */
 class GrCoordTransform : SkNoncopyable {
 public:
-    GrCoordTransform() { SkDEBUGCODE(fInProcessor = false); }
+    GrCoordTransform() : fSourceCoords(kLocal_GrCoordSet) { SkDEBUGCODE(fInProcessor = false); }
 
     /**
      * Create a transformation that maps [0, 1] to a texture's boundaries. The precision is inferred
      * from the texture size and filter. The texture origin also implies whether a y-reversal should
      * be performed.
      */
     GrCoordTransform(GrCoordSet sourceCoords,
                      const GrTexture* texture,
                      GrTextureParams::FilterMode filter) {
         SkASSERT(texture);
@@ skipping 82 matching lines @@
 
 #ifdef SK_DEBUG
 public:
     void setInProcessor() const { fInProcessor = true; }
 private:
     mutable bool fInProcessor;
 #endif
 };
 
 #endif