tree 2ba43148d53d8bf2328cffad8c25a18ab9573b52
parent 156d4aef628d5aec0e23e5ef03c2c4a5aece9225
author Alex Fandrianto <alexfandrianto@google.com> 1467170374 -0700
committer Alex Fandrianto <alexfandrianto@google.com> 1467413873 +0000

x/ref: Avoid JNI DETECTED ERROR IN APPLICATION error

I noticed that if I try to return a non-primitive object during an
exception (such as during SyncgroupJoin) that the jni would crash.

This error seems to imply that we have to wait for Java to handle
the exception OR clear the exception OR just return early (with null).

I opted for returning early. The JNI functions that return errors and
primitives remain as-is since the latter can't be nil'd.

Change-Id: If7d88ee72cead5a6f0c0d38061a2f309570089d3