Fix overlap test for 64-bit pointers in SkMatrix

src/core/SkMatrix.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMatrix.h"
 #include "SkFloatBits.h"
 #include "SkString.h"
@@ skipping 1007 matching lines @@
     SkASSERT(src == dst || &dst[count] <= &src[0] || &src[count] <= &dst[0]);
 
     this->getMapPtsProc()(*this, dst, src, count);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkMatrix::mapHomogeneousPoints(SkScalar dst[], const SkScalar src[], int count) const {
     SkASSERT((dst && src && count > 0) || 0 == count);
     // no partial overlap
-    SkASSERT(src == dst || SkAbs32((int32_t)(src - dst)) >= 3*count);
+    SkASSERT(src == dst || &dst[3*count] <= &src[0] || &src[3*count] <= &dst[0]);
 
     if (count > 0) {
         if (this->isIdentity()) {
             memcpy(dst, src, 3*count*sizeof(SkScalar));
             return;
         }
         do {
             SkScalar sx = src[0];
             SkScalar sy = src[1];
             SkScalar sw = src[2];
@@ skipping 745 matching lines @@
         rotation1->fX = cos1;
         rotation1->fY = sin1;
     }
     if (rotation2) {
         rotation2->fX = cos2;
         rotation2->fY = sin2;
     }
 
     return true;
 }