Fix win64 debug mode compilation

Review URL: http://codereview.chromium.org/7482042

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8757 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ic.cc

@@ -88,7 +88,8 @@ void IC::TraceIC(const char* type,
       // function and the original code.
       JSFunction* function = JSFunction::cast(frame->function());
       function->PrintName();
-      int code_offset = address() - js_code->instruction_start();
+      int code_offset =
+          static_cast<int>(address() - js_code->instruction_start());
       PrintF("+%d", code_offset);
     } else {
       PrintF("<unknown>");