Player got stuck after receiving EventStream object

When we are injecting in the manifest:

```



/DAgAAAAAAAAAP/wDwUAAAExf8/+HtpKgAABAAAAAMijVZM=



```

In the manifest the player gets stuck in BUFFERING state.

**Exoplayer version**: 2.17.1
**Protocol used**: DASH

Additional information: I am getting this in the event logs:

` metadata [eventTime=0.48, mediaPos=17994.24, window=0, period=0
D/EventLogger: EMSG: scheme=urn:scte:scte35:2014:xml+bin, id=66885518, durationMs=0, value=
D/EventLogger: ]
`
So onMetadata is triggered but after a couple of seconds the player got stuck in buffering state.

I have sent an example of the manifest along with the bug report to the email.