Prevent hang when _.filter() removes all files entries during mbtiles scan. Fixes #7.
Prevent hang when _.filter() removes all files entries during mbtiles scan. Fixes #7.

zhm/tilestream,zhm/tilestream,HydroLogic/tilestream,simonpoole/tilestream,HydroLogic/tilestream,makinacorpus/tilestream,frankrowe/tilestream,markng/tilestream,makinacorpus/tilestream,staltz/tilestream,mapbox/tilestream,NolaMark/tilestream,mapbox/tilestream,staltz/tilestream,frankrowe/tilestream,markng/tilestream,simonpoole/tilestream,NolaMark/tilestream