Dirk Hohndel 0e49e61ddc Fix test for "air" in tooltip display of gaschange
The "is_air()" test works when we have the gases in permille, but not in
percent. In that case we can just check for He == 0 and O2 == 21.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2014-04-29 22:39:33 -07:00
..
2014-03-07 08:56:06 -08:00