[xml] Incorrect linenumber in error reporting

[Kris Breuker <kris b-lex nl>]

Hello,

When parsing an XML file containing a comment with an empty line, libxml 
reports the wrong line number for errors occurring after the comment. 
This only happens with libxml compiled for Windows and files saved in 
Windows format (with CR+LF line endings), so I guess somewhere both CR 
and LF are counted as separate line endings.

Examples:

The document:
<!--
-->

gives the following correct xmllint output, with an error on line 2:
file:///z:/tests/linenum.xml:2: parser error : Start tag expected, '<' 
not found
-->
  ^

When I add an empty line to the comment:
<!--

-->

xmllint says the error occurs on line 4 instead of line 3:
file:///z:/tests/linenum.xml:4: parser error : Start tag expected, '<' 
not found
-->
  ^

But adding another empty line increases the line count with just 1:
<!--


-->

produces the following error on line 5:
file:///z:/tests/linenum.xml:5: parser error : Start tag expected, '<' 
not found
-->
  ^

So if a Windows-formatted XML document contains a comment with one or 
more empty lines, the line number is one too high. For Unix-formatted 
documents, the line count is correct. I have tested this with libxml 
version 2.7.3 for Windows (as compiled by Igor Zlatovic). I also ran 
xmllint on a Unix system which reported the correct line numbers, but 
that was only version 2.6.20.

Kris Breuker