[8u] RFR: 8268103 JNI functions incorrectly return a double after JDK-8265836

[Severin Gehwolf]

Hi,

Could I please get a review of this one-line fix? This bug is a follow-
up for JDK-8265836, which got integrated to OpenJDK 8u. The JDK 11u
change doesn't apply cleanly since the code location is different (only
one for other *nixes) and JNI signature in JDK 8.

Bug: https://bugs.openjdk.java.net/browse/JDK-8268103
webrev: https://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8268103/jdk8/01/webrev/

Thoughts?

Thanks,
Severin