Merge "Correct NPE when active call is disconnected." into oc-dev

                    // If there is an active call.

                    if (mForegroundCall.hasConnections()) {

                        ImsCall activeCall = mForegroundCall.getFirstConnection().getImsCall();

                        if (activeCall != null && imsCall != null) {

                            // activeCall could be null if the foreground call is in a disconnected

                            // state.  If either of the calls is null there is no need to check if

                            // one will be disconnected on answer.

                            boolean answeringWillDisconnect =

                                    shouldDisconnectActiveCallOnAnswer(activeCall, imsCall);

                            conn.setActiveCallDisconnectedOnAnswer(answeringWillDisconnect);

                        }

                    }

                    conn.setAllowAddCallDuringVideoCall(mAllowAddCallDuringVideoCall);

                    addConnection(conn);