Fix a few memory leaks related to unreleased slices in observers and metadata arrays#217

Merged

timburks merged 2 commits intogrpc:masterfrom Timing-GmbH:fix-leaks

Apr 26, 2018

+93-44

Commits on Apr 21, 2018

Fix a few memory leaks related to unreleased slices in observers and metadata arrays.
MrMage
committed
Avoid a try! call. Even though it is guaranteed to be safe now, it might not be in the future.
MrMage
committed