Merge "audiopolicy: Fix crash in getMsdPatches"

const AudioPatchCollection AudioPolicyManager::getMsdPatches() const {

    AudioPatchCollection msdPatches;

    audio_module_handle_t msdModuleHandle = mHwModules.getModuleFromName(

            AUDIO_HARDWARE_MODULE_ID_MSD)->getHandle();

    if (msdModuleHandle == AUDIO_MODULE_HANDLE_NONE) return msdPatches;

    sp<HwModule> msdModule = mHwModules.getModuleFromName(AUDIO_HARDWARE_MODULE_ID_MSD);

    if (msdModule != 0) {

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

            sp<AudioPatch> patch = mAudioPatches.valueAt(i);

            for (size_t j = 0; j < patch->mPatch.num_sources; ++j) {

                const struct audio_port_config *source = &patch->mPatch.sources[j];

                if (source->type == AUDIO_PORT_TYPE_DEVICE &&

                    source->ext.device.hw_module == msdModuleHandle) {

                        source->ext.device.hw_module == msdModule->getHandle()) {

                    msdPatches.addAudioPatch(patch->mHandle, patch);

                }

            }

        }

    }

    return msdPatches;

}