Remove dead code in SkBitmapProcLegacyShader::ContextSize

src/pathops/SkOpSegment.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 "SkOpCoincidence.h"
 #include "SkOpContour.h"
 #include "SkOpSegment.h"
 #include "SkPathWriter.h"
@@ skipping 1040 matching lines @@
         otherEnd = next->end();
     }
     if (!otherEnd) {
         return nullptr;
     }
     int foundStep = foundSpan->step(otherEnd);
     if (*stepPtr != foundStep) {
         return set_last(last, endSpan);
     }
     SkASSERT(*startPtr);
-    if (!otherEnd) {
-        return nullptr;
-    }
 //    SkASSERT(otherEnd >= 0);
     SkOpSpan* origMin = step < 0 ? origStart->prev() : origStart->upCast();
     SkOpSpan* foundMin = foundSpan->starter(otherEnd);
     if (foundMin->windValue() != origMin->windValue()
             || foundMin->oppValue() != origMin->oppValue()) {
           return set_last(last, endSpan);
     }
     *startPtr = foundSpan;
     *stepPtr = foundStep;
     if (minPtr) {
@@ skipping 614 matching lines @@
     int absOut = SkTAbs(outerWinding);
     int absIn = SkTAbs(innerWinding);
     bool result = absOut == absIn ? outerWinding < 0 : absOut < absIn;
     return result;
 }
 
 int SkOpSegment::windSum(const SkOpAngle* angle) const {
     const SkOpSpan* minSpan = angle->start()->starter(angle->end());
     return minSpan->windSum();
 }