Fixed compiler warning C4244 when compiling with the ARM simulator in Windows...

src/utils.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 522 matching lines @@
   word |= ptr[0] << 24;
   return word;
 #endif
 }
 
 
 static inline void Store16(byte* ptr, uint16_t value) {
 #ifdef CAN_READ_UNALIGNED
   *reinterpret_cast<uint16_t*>(ptr) = value;
 #else
-  ptr[1] = value;
+  // Cast to avoid warning C4244 when compiling with Microsoft Visual C++.
+  ptr[1] = static_cast<byte>(value);
   ptr[0] = value >> 8;
 #endif
 }
 
 
 static inline void Store32(byte* ptr, uint32_t value) {
 #ifdef CAN_READ_UNALIGNED
   *reinterpret_cast<uint32_t*>(ptr) = value;
 #else
   ptr[3] = value;
   ptr[2] = value >> 8;
   ptr[1] = value >> 16;
   ptr[0] = value >> 24;
 #endif
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_UTILS_H_