PVS-Studio warning V560 for windjview

inline bool IsValidChar(int c)
{
  return c == 0x9 || 0xA || c == 0xD ||
         c >= 0x20 && c <= 0xD7FF ||
         c >= 0xE000 && c <= 0xFFFD ||
         c >= 0x10000 && c <= 0x10FFFF;
}

This suspicious code was found in windjview project by PVS-Studio static code analyzer.
Warning message is:
V560 A part of conditional expression is always true: 0xA. WinDjView xmlparser.cpp 45

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