fix valgrind uninitialized issue

src/pathops/SkPathOpsTSect.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkChunkAlloc.h"
 #include "SkPathOpsBounds.h"
 #include "SkPathOpsRect.h"
 #include "SkPathOpsQuad.h"
 #include "SkIntersections.h"
 #include "SkTSort.h"
 
 /* TCurve is either SkDQuadratic or SkDCubic */
 template<typename TCurve>
 class SkTCoincident {
 public:
-    SkTCoincident()
-        : fCoincident(false) {
+    SkTCoincident() {
+        clear();

[mtklein, 2015/04/13 15:55:19]

this-> ?

     }
 
     void clear() {
         fPerpT = -1;
         fCoincident = false;
     }
 
     bool isCoincident() const {
         return fCoincident;
     }
 
     void init() {
-        fCoincident = false;
+        clear();
         SkDEBUGCODE(fPerpPt.fX = fPerpPt.fY = SK_ScalarNaN);
-        SkDEBUGCODE(fPerpT = SK_ScalarNaN);
     }
 
     void markCoincident() {
         if (!fCoincident) {
             fPerpT = -1;
         }
         fCoincident = true;
     }
 
     const SkDPoint& perpPt() const {
@@ skipping 1903 matching lines @@
         } else if (intersections->isCoincident(index + 1)) {
             intersections->removeOne(index + 1);
             --last;
         } else {
             intersections->setCoincident(index++);
         }
         intersections->setCoincident(index);
     }
     SkASSERT(intersections->used() <= TCurve::kMaxIntersections);
 }