Fix nv12 64 bit gcc increment.

Should be 16 bytes, but was 0x16 causing memory corruption.

TBR=harryjin@google.com
BUG=libyuv:492

Review URL: https://codereview.chromium.org/1368693002 .

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1490
+Version: 1492
 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 1490
+#define LIBYUV_VERSION 1492
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/row_gcc.cc

@@ -1841,7 +1841,7 @@ void OMITFP I422ToRGBARow_SSSE3(const uint8* y_buf,
 // Read 8 UV from NV12, upsample to 16 UV.
 #define READNV12_AVX2                                                          \
     "vmovdqu    " MEMACCESS([uv_buf]) ",%%xmm0                      \n"        \
-    "lea        " MEMLEA(0x16, [uv_buf]) ",%[uv_buf]                \n"        \
+    "lea        " MEMLEA(0x10, [uv_buf]) ",%[uv_buf]                \n"        \
     "vpermq     $0xd8,%%ymm0,%%ymm0                                 \n"        \
     "vpunpcklwd %%ymm0,%%ymm0,%%ymm0                                \n"        \
     "vmovdqu    " MEMACCESS([y_buf]) ",%%xmm4                       \n"        \