tree 9e4d8bbe6c4b9fa97cec083c7fd28a2ffabbee3c
parent e390024a0878bcb9e073e4b2cba6caea4980de87
author Tyler Gunn <tgunn@google.com> 1450285853 -0800
committer Tyler Gunn <tgunn@google.com> 1450285853 -0800

Fix NPE which is causing com.android.phone to crash.

It is possible for getOriginalConnection() to return null at the end of
a call once the RIL has disconnected it.  Added null check to ensure
that isImsConnection() won't throw an NPE in this case.

The original code was the following, which is inherently NPE safe:
return getOriginalConnection() instanceof ImsPhoneConnection;

Bug: 26222625
Change-Id: Iaa77a4d739578ddcfbbb5849f7ddf15e3bad0f76