[mkgmap-dev] Commit: r3669: small change in PrecompSeaGenerator to allow processing the "Upcoming change in files on openstreetmapdata.com"

Version mkgmap-r3669 was committed by gerd on Tue, 01 Mar 2016 small change in PrecompSeaGenerator to allow processing the "Upcoming change in files on openstreetmapdata.com" The old code stopped reading too early when the reader returned a null value.