fix fuzzer bug

src/pathops/SkOpSpan.cpp

 /*
  * 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 "SkOpCoincidence.h"
 #include "SkOpContour.h"
 #include "SkOpSegment.h"
 #include "SkPathWriter.h"
@@ skipping 155 matching lines @@
 const SkOpSegment* SkOpPtT::segment() const {
     return span()->segment();
 }
 
 SkOpSegment* SkOpPtT::segment() {
     return span()->segment();
 }
 
 void SkOpPtT::setDeleted() {
     SkASSERT(this->span()->debugDeleted() || this->span()->ptT() != this);
-    SkASSERT(this->globalState()->debugSkipAssert() || !fDeleted);
+    SkOPASSERT(!fDeleted);
     fDeleted = true;
 }
 
 // please keep this in sync with debugAddOppAndMerge
 // If the added points envelop adjacent spans, merge them in.
 void SkOpSpanBase::addOppAndMerge(SkOpSpanBase* opp) {
     if (this->ptT()->addOpp(opp->ptT())) {
         this->checkForCollapsedCoincidence();
     }
     // compute bounds of points in span
@@ skipping 261 matching lines @@
 
 void SkOpSpan::setWindSum(int windSum) {
     SkASSERT(!final());
     if (fWindSum != SK_MinS32 && fWindSum != windSum) {
         this->globalState()->setWindingFailed();
         return;
     }
     SkASSERT(!DEBUG_LIMIT_WIND_SUM || SkTAbs(windSum) <= DEBUG_LIMIT_WIND_SUM);
     fWindSum = windSum;
 }