Review request for JDK-8047366 and JDK-8141505

[Hannes Wallnoefer]

Please review JDK-8047366 and JDK-8141505.

These are two trivial test-only fixes enabled by the recent double 
conversion commit.

http://cr.openjdk.java.net/~hannesw/8047366/webrev/
http://cr.openjdk.java.net/~hannesw/8141505/webrev/

Thanks,
Hannes