Fix the build.

        return getFirstActiveRingingCall().getPhone();

    }

    /**

     * unregister phone from CallManager

     * @param phone

     */

    public void unregisterPhone(Phone phone) {

        if (phone != null && mPhones.contains(phone)) {

            mPhones.remove(phone);

            mRingingCalls.remove(phone.getRingingCall());

            mBackgroundCalls.remove(phone.getBackgroundCall());

            mForegroundCalls.remove(phone.getForegroundCall());

            unregisterForPhoneStates(phone);

            if (phone == mDefaultPhone) {

                if (mPhones.isEmpty()) {

                    mDefaultPhone = null;

                } else {

                    mDefaultPhone = mPhones.get(0);

                }

            }

        }

    }

    public void setAudioMode() {

        Context context = getContext();

        if (context == null) return;