Don't attempt to handle out-of-memory situations: XMALLOC/XCALLOC will
`assert` if there is no memory left.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Rearrange the bfdd northbound callbacks as following:
* bfd_nb.h: prototypes of all northbound callbacks.
* bfd_nb.c: definition of all northbound callbacks and their
associated YANG data paths.
* bfd_nb_config.c: implementation of YANG configuration nodes.
* bfd_nb_state.c: implementation of YANG state nodes.
This should help to keep to code more organized and easier to
maintain.
No behavior changes intended.
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
