re-enable wrngs; suppress unused-but-set-variable
re-enable wrngs; suppress unused-but-set-variable

the unused-but-set-variable warning trips when the ragel scanner sets
the act, ts, and te variables but they are never used. ts and te will
eventually be used to track start/end offsets, but act doesn't seem
useful to me.

OpenBEL/libbel,OpenBEL/libbel