fix a few more fuzzes

src/pathops/SkOpCoincidence.cpp

 /*
  * Copyright 2015 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 "SkOpSegment.h"
 #include "SkPathOpsTSect.h"
 
@@ skipping 776 matching lines @@
             const SkOpSegment* innerOpp = ios->segment();
             SkASSERT(!innerOpp->done());
             SkOpSegment* innerCoinWritable = const_cast<SkOpSegment*>(innerCoin);
             SkOpSegment* innerOppWritable = const_cast<SkOpSegment*>(innerOpp);
             if (outerCoin == innerCoin) {
                 const SkOpPtT* oce = outer->coinPtTEnd();
                 if (oce->deleted()) {
                     return true;
                 }
                 const SkOpPtT* ice = inner->coinPtTEnd();
-                SkASSERT(!ice->deleted());
+                FAIL_IF(ice->deleted());
                 if (outerOpp != innerOpp && this->overlap(ocs, oce, ics, ice, &overS, &overE)) {
                     (void) this->addIfMissing(ocs->starter(oce), ics->starter(ice),
                             overS, overE, outerOppWritable, innerOppWritable, added
                             SkDEBUGPARAMS(ocs->debugEnder(oce))
                             SkDEBUGPARAMS(ics->debugEnder(ice)));
                 }
             } else if (outerCoin == innerOpp) {
                 const SkOpPtT* oce = outer->coinPtTEnd();
                 SkASSERT(!oce->deleted());
                 const SkOpPtT* ioe = inner->oppPtTEnd();
@@ skipping 577 matching lines @@
     }
     do {
         if (coin->coinPtTStart()->segment() == deleted
                 || coin->coinPtTEnd()->segment() == deleted
                 || coin->oppPtTStart()->segment() == deleted
                 || coin->oppPtTEnd()->segment() == deleted) {
             this->release(fHead, coin);
         }
     } while ((coin = coin->next()));
 }