MemRandomize fix for short result

BUG=none
TEST=none
R=dingkai@google.com

Review URL: https://webrtc-codereview.appspot.com/1668005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@725 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 724
+Version: 725
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 723
+#define LIBYUV_VERSION 725
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

unit_test/unit_test.h

@@ -63,9 +63,9 @@ static inline double get_time() {
 
 static inline void MemRandomize(uint8* dst, int len) {
   int i;
-  for (i = 0; i < len - 3; i += 4) {
-    *reinterpret_cast<uint32*>(dst) = random();
-    dst += 4;
+  for (i = 0; i < len - 1; i += 2) {
+    *reinterpret_cast<uint16*>(dst) = random();
+    dst += 2;
   }
   for (; i < len; ++i) {
     *dst++ = random();