Don't leave fResScale uninitialized when constructing an SkStroke.

src/core/SkStroke.cpp

 /*
  * Copyright 2008 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 "SkStrokerPriv.h"
 #include "SkGeometry.h"
 #include "SkPathPriv.h"
@@ skipping 1249 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkPaintDefaults.h"
 
 SkStroke::SkStroke() {
     fWidth      = SK_Scalar1;
     fMiterLimit = SkPaintDefaults_MiterLimit;
+    fResScale   = 1;
     fCap        = SkPaint::kDefault_Cap;
     fJoin       = SkPaint::kDefault_Join;
     fDoFill     = false;
 }
 
 SkStroke::SkStroke(const SkPaint& p) {
     fWidth      = p.getStrokeWidth();
     fMiterLimit = p.getStrokeMiter();
+    fResScale   = 1;
     fCap        = (uint8_t)p.getStrokeCap();
     fJoin       = (uint8_t)p.getStrokeJoin();
     fDoFill     = SkToU8(p.getStyle() == SkPaint::kStrokeAndFill_Style);
 }
 
 SkStroke::SkStroke(const SkPaint& p, SkScalar width) {
     fWidth      = width;
     fMiterLimit = p.getStrokeMiter();
+    fResScale   = 1;
     fCap        = (uint8_t)p.getStrokeCap();
     fJoin       = (uint8_t)p.getStrokeJoin();
     fDoFill     = SkToU8(p.getStyle() == SkPaint::kStrokeAndFill_Style);
 }
 
 void SkStroke::setWidth(SkScalar width) {
     SkASSERT(width >= 0);
     fWidth = width;
 }
 
@@ skipping 228 matching lines @@
         default:
             break;
     }
 
     if (fWidth < SkMinScalar(rw, rh) && !fDoFill) {
         r = rect;
         r.inset(radius, radius);
         dst->addRect(r, reverse_direction(dir));
     }
 }