[Freeciv-Dev] suppress unused warnings

[Mike Kaufman <kaufman@xxxxxxxxxxxxxxxxxxxxxx>]

here's a quick little patch to suppress the unused warning that
registry.c kicks out. This is really annoying if you have say a new
civclientrc (with cma) and are using an old client. This spits out the
warnings if the log level is set to LOG_VERBOSE.

We can get rid of all the code in savegame.c that suppresses these
warnings with this patch.

Does anyone have a problem with it?

-mike

unused.diff
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