Yong Tang a8652362f7 Fix crash caused by docker service inspect --pretty ...

This fix tries to fix the crash caused by `docker service inspect --pretty`,
by performing necessary nil pointer check.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: b6857e91c1625695abbf5897e13f688028880c33
Component: engine

2016-11-16 17:26:03 -08:00

components/engine

Fix crash caused by docker service inspect --pretty

2016-11-16 17:26:03 -08:00

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