Merge "Fix a segfault in AudioFlinger." into ics-aah

        for (size_t i = 0; i < mAudioHwDevs.size(); i++) {

            audio_hw_device_t *dev = mAudioHwDevs[i];

            char *s = dev->get_parameters(dev, keys.string());

            out_s8 += String8(s);

            out_s8 += String8(s ? s : "");

            free(s);

        }

        return out_s8;