Cope with empty stats prefixes
Cope with empty stats prefixes

diptanu/statsd-csharp-client,bilal-fazlani/statsd-csharp-client,Pereingo/statsd-csharp-client,DarrellMozingo/statsd-csharp-client,goncalopereira/statsd-csharp-client,agileharbor/telegraf-client,diptanu/statsd-csharp-client,Kyle2123/statsd-csharp-client,circleback/statsd-csharp-client