Increase buffer size for building slot property names.
Increase buffer size for building slot property names.

malloch/libmapper,libmapper/libmapper,radarsat1/libmapper,libmapper/libmapper,radarsat1/libmapper,malloch/libmapper,malloch/libmapper,radarsat1/libmapper,libmapper/libmapper,libmapper/libmapper,libmapper/libmapper,radarsat1/libmapper,radarsat1/libmapper,malloch/libmapper,libmapper/libmapper,malloch/libmapper,malloch/libmapper