Change a static_cast to BitCast

Hopefuly this will make the Win32 builder happy

TBR=ricow@chromium.org
Review URL: http://codereview.chromium.org/6038007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ia32/code-stubs-ia32.cc

@@ -5003,9 +5003,9 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
   static const int kDeltaToCmpImmediate = 2;
   static const int kDeltaToMov = 8;
   static const int kDeltaToMovImmediate = 9;
-  static const int8_t kCmpEdiImmediateByte1 = static_cast<int8_t>(0x81);
-  static const int8_t kCmpEdiImmediateByte2 = static_cast<int8_t>(0xff);
-  static const int8_t kMovEaxImmediateByte = static_cast<int8_t>(0xb8);
+  static const int8_t kCmpEdiImmediateByte1 = BitCast<int8_t, uint8_t>(0x81);
+  static const int8_t kCmpEdiImmediateByte2 = BitCast<int8_t, uint8_t>(0xff);
+  static const int8_t kMovEaxImmediateByte = BitCast<int8_t, uint8_t>(0xb8);
 
   ExternalReference roots_address = ExternalReference::roots_address();