message: add check for call requestPermissions only with API>23
diff: @@ -37,6 +37,7 @@ import android.content.pm.PackageManager;
  import android.media.AudioFormat;
  import android.media.AudioRecord;
  import android.media.MediaRecorder;
  +import android.os.Build;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  @@ -155,9 +156,11 @@ public class SpeechActivity extends Activity {
  }
  private void requestMicrophonePermission() {
  + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
  requestPermissions(
  new String[]{android.Manifest.permission.RECORD_AUDIO}, REQUEST_RECORD_AUDIO);
  }
  + }
  @Override
  public void onRequestPermissionsResult(
  