fix (some) 64bit warnings -- size_t -> int

src/core/SkLineClipper.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkLineClipper.h"
 
 template <typename T> T pin_unsorted(T value, T limit0, T limit1) {
@@ skipping 249 matching lines @@
 
         if (tmp[index1].fX > clip.fRight) {
             r->set(clip.fRight, sect_with_vertical(tmp, clip.fRight));
             SkASSERT(is_between_unsorted(r->fY, tmp[0].fY, tmp[1].fY));
             r += 1;
             r->set(clip.fRight, tmp[index1].fY);
         } else {
             *r = tmp[index1];
         }
 
-        lineCount = r - result;
+        lineCount = SkToInt(r - result);
     }
 
     // Now copy the results into the caller's lines[] parameter
     if (reverse) {
         // copy the pts in reverse order to maintain winding order
         for (int i = 0; i <= lineCount; i++) {
             lines[lineCount - i] = result[i];
         }
     } else {
         memcpy(lines, result, (lineCount + 1) * sizeof(SkPoint));
     }
     return lineCount;
 }