* Simplify checks for valid nuke detonation sites.
* falsy check was replaced with equality so this needs to be exact
* Use SSmapping.existing_station_areas instead
* swap to guard clause
* Update code/game/gamemodes/nuclear/nuclearbomb.dm
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>
* switch to switch
---------
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>