samples: . accepts previous comment as-is
When updating a sample configuration with a comment, a dot '.'
in the new comment keeps the previous comment.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
1 reporter_name="Thomas Petazzoni"
2 reporter_url="http://www.free-electrons.com/"
3 reporter_comment="Very basic testing only"