PVS-Studio warning V593 for ReactOS

static void symt_fill_sym_info(....)
{
  ....
  if (sym->tag != SymTagPublicSymbol ||
      !(dbghelp_options & SYMOPT_UNDNAME) ||
      (sym_info->NameLen =
         UnDecorateSymbolName(name, sym_info->Name,
           sym_info->MaxNameLen, UNDNAME_NAME_ONLY) == 0))
  ....
}

This suspicious code was found in ReactOS project by PVS-Studio static code analyzer.
Warning message is:
V593 Consider reviewing the expression of the 'A = B == C' kind. The expression is calculated as following: 'A = (B == C)'. symbol.c 801

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