Merge "Fix stack overflow when log the invalid SignalStrength level" into main

    public int getLevel() {

        int level = getPrimary().getLevel();

        if (level < SIGNAL_STRENGTH_NONE_OR_UNKNOWN || level > SIGNAL_STRENGTH_GREAT) {

            loge("Invalid Level " + level + ", this=" + this);

            loge("Invalid Level " + level);

            return SIGNAL_STRENGTH_NONE_OR_UNKNOWN;

        }

        return getPrimary().getLevel();