automake cleanup: uninitialized version_t

This sometimes gives a completely random uint64_t value, because it is
potentially used uninitialized.

Signed-off-by: Roald J. van Loon <roaldvanloon@gmail.com>
mon: fix uninitialized Op field

- Uninitialized field in MonitorLevelDB::Op causes random build errors.

Signed-off-by: Roald J. van Loon <roaldvanloon@gmail.com>