Another installment of checks for return values from GetFieldID, and friends, to follow up on last weeks work [1].
http://cr.openjdk.java.net/~chegar/netNullChecks/webrev/There are more cleanups to come along the same lines, but I'd like to keep these changes small and confined for now.
-Chris. [1] http://mail.openjdk.java.net/pipermail/net-dev/2013-October/007698.html
