srcfile warning for bibentry citations

[n8layman]

cr_cn() returns the following warning when formate = "bibentry":

'srcfile' argument is deprecated.

This is likely a result of when bibtext depreciated the srcfile argument of do_read_bib() in this PR 47 a few years back.

To resolve the warning the call to parse_bibtext() within cr_cn() should be updated to reflect the change.