calcurse-caldav: Print XML dump in debug mode only
calcurse-caldav: Print XML dump in debug mode only

In die_atnode(), we currently print a full dump of the XML node if
verbose mode is enabled. Change this behavior such that a dump is only
created in debug mode.

Signed-off-by: Lukas Fleischer <c9ca73f8336dcfb037ec2c2abf52d80a6847a5cd@calcurse.org>

lfos/calcurse,lfos/calcurse,lfos/calcurse