Merge "AudioSystem: Fix null check"

android_media_AudioSystem_routing_callback()

{

    JNIEnv *env = AndroidRuntime::getJNIEnv();

    // callback into java

    jclass clazz = env->FindClass(kClassPathName);

    if (env == NULL) {

        return;

    }

    // callback into java

    jclass clazz = env->FindClass(kClassPathName);

    env->CallStaticVoidMethod(clazz,

                              gAudioPolicyEventHandlerMethods.postRoutingUpdatedFromNative);

    env->DeleteLocalRef(clazz);