fix for arm builds where tmp for assembly produces an error if its uninitialized.

BUG=libyuv:432
TESTED=try bots
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/49249004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1392 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1382
+Version: 1392
 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 1382
+#define LIBYUV_VERSION 1392
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/scale_neon.cc

@@ -927,7 +927,7 @@ void ScaleARGBRowDownEvenBox_NEON(const uint8* src_argb, ptrdiff_t src_stride,
 
 void ScaleARGBCols_NEON(uint8* dst_argb, const uint8* src_argb,
                         int dst_width, int x, int dx) {
-  int tmp;
+  int tmp = 0;
   const uint8* src_tmp = src_argb;
   asm volatile (
     ".p2align   2                              \n"

source/scale_neon64.cc

@@ -931,7 +931,7 @@ void ScaleARGBCols_NEON(uint8* dst_argb, const uint8* src_argb,
   int64 dst_width64 = (int64) dst_width;  // Work around ios 64 bit warning.
   int64 x64 = (int64) x;
   int64 dx64 = (int64) dx;
-  int64 tmp64;
+  int64 tmp64 = 0;
   asm volatile (
   "1:                                          \n"
     LOAD1_DATA32_LANE(v0, 0)