Fix missing subtitle addition

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParser.java

@@ -502,6 +502,7 @@ public final class HlsPlaylistParser implements ParsingLoadable.Parser<HlsPlayli
                   roleFlags,
                   language)
                   .copyWithMetadata(metadata);
+          subtitles.add(new Rendition(uri, format, groupId, name));
           break;
         case TYPE_CLOSED_CAPTIONS:
           String instreamId = parseStringAttr(line, REGEX_INSTREAM_ID, variableDefinitions);