[xml] new line character after calling xmlTextWriterEndDocument

[Prashant R <ramapra gmail com>]

Using LIBXML 2.7.3 and the writer interface

I manage the canonicalization of my xml document  by  writing data in canonicalized format and not using the API's

i find that after the call to xmlTextWriterEndDocument adds a the '\n' character to the buffer  that disrupts the canonicalization of my document. 

Is it ok to not call this API after I have done writing the contents of the XML file using the writer interface or are there any other ways to circumvent this issue ?