MapColor: Fix warning and simplify implementation

OpenOrienteering / mapper

OpenOrienteering Mapper is a software for creating maps for the orienteering sport.

https://www.openorienteering.org/apps/mapper/

GNU General Public License v3.0

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MapColor: Fix warning and simplify implementation #2216

Closed dl3sdo closed 7 months ago

dl3sdo commented 7 months ago

Avoid warning by removing unused 'this' from capture clause. Simplify implementation by removing unnecessary checks and using bitmask values in the typical way.