PVS-Studio warning V576 for V8

static const char*
int_getDefaultCodepage()
{
  ....
  sprintf(codepage, "windows-%d", GetACP());
  ....
}

This suspicious code was found in V8 project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. Consider checking the third actual argument of the 'sprintf' function. The SIGNED integer type argument is expected. putil.c 1905

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/