path ops near exact

src/pathops/SkPathOpsSimplify.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkAddIntersections.h"
 #include "SkOpEdgeBuilder.h"
 #include "SkPathOpsCommon.h"
 #include "SkPathWriter.h"
@@ skipping 167 matching lines @@
             AddSelfIntersectTs(current);
         }
         SkOpContour* next;
         do {
             next = *nextPtr++;
         } while (AddIntersectTs(current, next) && nextPtr != listEnd);
     } while (currentPtr != listEnd);
     // eat through coincident edges
     CoincidenceCheck(&contourList, 0);
     FixOtherTIndex(&contourList);
+    CheckEnds(&contourList);
     SortSegments(&contourList);
 #if DEBUG_ACTIVE_SPANS || DEBUG_ACTIVE_SPANS_FIRST_ONLY
     DebugShowActiveSpans(contourList);
 #endif
     // construct closed contours
     SkPathWriter simple(*result);
     if (builder.xorMask() == kWinding_PathOpsMask ? bridgeWinding(contourList, &simple)
                 : !bridgeXor(contourList, &simple))
     {  // if some edges could not be resolved, assemble remaining fragments
         SkPath temp;
         temp.setFillType(fillType);
         SkPathWriter assembled(temp);
         Assemble(simple, &assembled);
         *result = *assembled.nativePath();
         result->setFillType(fillType);
     }
     return true;
 }