check pointer of last pixel and last pixel + 64 are in the same page.
BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/387006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@170 16f28f9a-4ce2-e073-06de-1de4eb20be90
diff --git a/source/row_posix.cc b/source/row_posix.cc
index fe6f62d..e0148b7 100644
--- a/source/row_posix.cc
+++ b/source/row_posix.cc
@@ -839,7 +839,7 @@
 }
 #endif
 
-#ifdef HAS_YUY2TOI420ROW_SSE2
+#ifdef HAS_YUY2TOYROW_SSE2
 void YUY2ToYRow_SSE2(const uint8* src_yuy2, uint8* dst_y, int pix) {
   asm volatile (
     "pcmpeqb   %%xmm5,%%xmm5                   \n"
@@ -1100,7 +1100,7 @@
   );
 }
 
-#endif  // HAS_YUY2TOI420ROW_SSE2
+#endif  // HAS_YUY2TOYROW_SSE2
 
 #ifdef __cplusplus
 }  // extern "C"