errNone            56 lib/pdf/xpdf/PDFDoc.cc   errCode = errNone;
errNone           113 lib/pdf/xpdf/PDFDoc.cc   errCode = errNone;
errNone           163 lib/pdf/xpdf/PDFDoc.cc   errCode = errNone;
errNone           198 lib/pdf/xpdf/XRef.cc   errCode = errNone;