Fix JNI reference leak in MediaCodecVideoDecoder

webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc

Index: webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc
diff --git a/webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc b/webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc
index d30e94c58fbbb9ed3424a2959ce52cd0253fd003..8f50fc21078e7798545c8a782aeee9b53afe0c60 100644
--- a/webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc
+++ b/webrtc/sdk/android/src/jni/androidmediadecoder_jni.cc
@@ -199,7 +199,6 @@ MediaCodecVideoDecoder::MediaCodecVideoDecoder(
                               *j_media_codec_video_decoder_class_,
                               "<init>",
                               "()V"))) {
-  ScopedLocalRefFrame local_ref_frame(jni);
   codec_thread_->SetName("MediaCodecVideoDecoder", NULL);
   RTC_CHECK(codec_thread_->Start()) << "Failed to start MediaCodecVideoDecoder";
 
@@ -1014,8 +1013,9 @@ webrtc::VideoDecoder* MediaCodecVideoDecoderFactory::CreateVideoDecoder(
   for (VideoCodecType codec_type : supported_codec_types_) {
     if (codec_type == type) {
       ALOGD << "Create HW video decoder for type " << (int)type;
-      return new MediaCodecVideoDecoder(AttachCurrentThreadIfNeeded(), type,
-                                        egl_context_);
+      JNIEnv* jni = AttachCurrentThreadIfNeeded();
+      ScopedLocalRefFrame local_ref_frame(jni);
+      return new MediaCodecVideoDecoder(jni, type, egl_context_);
     }
   }
   ALOGW << "Can not find HW video decoder for type " << (int)type;