Fixed a few warnings

src/gpu/GrDrawState.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawState_DEFINED
 #define GrDrawState_DEFINED
 
@@ skipping 405 matching lines @@
     }
 
     GrColor getColorFilterColor() const { return fCommon.fColorFilterColor; }
     SkXfermode::Mode getColorFilterMode() const { return fCommon.fColorFilterMode; }
 
     /**
      * Constructor sets the color to be 'color' which is undone by the destructor.
      */
     class AutoColorRestore : public ::GrNoncopyable {
     public:
-        AutoColorRestore() : fDrawState(NULL) {}
+        AutoColorRestore() : fDrawState(NULL), fOldColor(0) {}

[sugoi, 2013/03/05 20:16:45]

Added this to remove the warning about "fOldColor" being potentially used before
having been initialized.

[bsalomon, 2013/03/05 20:19:20]

I've been avoiding doing this because the warning is bogus.. but ok.

 
         AutoColorRestore(GrDrawState* drawState, GrColor color) {
             fDrawState = NULL;
             this->set(drawState, color);
         }
 
         void reset() {
             if (NULL != fDrawState) {
                 fDrawState->setColor(fOldColor);
                 fDrawState = NULL;
@@ skipping 933 matching lines @@
     int                                    fAttribIndices[kAttribIndexCount];
     GrVertexAttribArray<kVertexAttribCnt>  fVertexAttribs;
     GrEffectStage                          fStages[kNumStages];
 
     typedef GrRefCnt INHERITED;
 };
 
 GR_MAKE_BITFIELD_OPS(GrDrawState::BlendOptFlags);
 
 #endif