PVS-Studio warning V618 for Source SDK

static void Exit(const char *msg)
{
  fprintf( stderr, msg );
  Pause();
  exit( -1 );
}

This suspicious code was found in Source SDK project by PVS-Studio static code analyzer.
Warning message is:
V618 It's dangerous to call the 'fprintf' function in such a manner, as the line being passed could contain format specification. The example of the safe code: printf("%s", str); Vice vice.cpp 52

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