Add null pointer check in removeConnection am: e370b538eb am: 58642e6545
am: 7e745ec49c

* commit '7e745ec49c0458f92af65bf370770417dcc7075d':
  Add null pointer check in removeConnection

Change-Id: Iba29d78be4b3cae05144e6c0b68cce5357114ddd