fix fuzzer bug

src/pathops/SkOpCoincidence.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkOpCoincidence_DEFINED
 #define SkOpCoincidence_DEFINED
 
 #include "SkTDArray.h"
@@ skipping 212 matching lines @@
     bool removeCollapsed();
     bool reorder();
 
 private:
     void add(const SkOpPtT* coinPtTStart, const SkOpPtT* coinPtTEnd, const SkOpPtT* oppPtTStart,
              const SkOpPtT* oppPtTEnd) {
         this->add(const_cast<SkOpPtT*>(coinPtTStart), const_cast<SkOpPtT*>(coinPtTEnd),
             const_cast<SkOpPtT*>(oppPtTStart), const_cast<SkOpPtT*>(oppPtTEnd));
     }
 
-    void addEndMovedSpans(const SkOpSpan* base, const SkOpSpanBase* testSpan);
+    bool addEndMovedSpans(const SkOpSpan* base, const SkOpSpanBase* testSpan);
     bool addEndMovedSpans(const SkOpPtT* ptT);
 
     bool addIfMissing(const SkCoincidentSpans* outer, SkOpPtT* over1s, SkOpPtT* over1e);
 
     bool addIfMissing(const SkCoincidentSpans* outer, const SkOpPtT* over1s,
                       const SkOpPtT* over1e) {
         return addIfMissing(outer, const_cast<SkOpPtT*>(over1s), const_cast<SkOpPtT*>(over1e));
     }
 
     bool addIfMissing(const SkOpPtT* over1s, const SkOpPtT* over1e,
@@ skipping 53 matching lines @@
     SkCoincidentSpans* fTop;
     SkOpGlobalState* fGlobalState;
     bool fContinue;
     bool fSpanDeleted;
     bool fPtAllocated;
     bool fCoinExtended;
     bool fSpanMerged;
 };
 
 #endif