Fix Android audio crash fixes Issue #1417

[Mrjaco12]

Fix Issue #1417

Why:

It appears that in this commit the check added to ensure group lengths are greater than 0 still allows for a case in which the groupIndex is -1 but the group.length == 0 so we are never breaking for the invalid groupIndex.

This change addresses the need by:

• Don't chain check for INDEX_UNSET to previous conditional

[rborn]

@Mrjaco12 ❤️

I can confirm the fix works, tested on android 9 (nokia 7+) with audioOnly and an mp3 file
It doesn't work without the fix

[wangliang1124]

Good job.

[rborn]

@cobarx hey, any chance to have a look at this?

Also any chance to reply to @kelset related to the React Native Core Contributors org we're trying to setup (well, he's doing all the work)? 🤗 https://github.com/react-native-community/meta/blob/master/MAINTAINERS.md

[kesha-antonov]

Nice!

[cobarx]

Ok sorry for the delay on this, I haven't been as active lately.

Yes, this will work. It took me a bit of looking but you were right on the money. The nested check whether there are video groups or not through me for a loop on why unchaining worked. So I moved that into the main if check to make that more readable and added some comments.

I'll reach out to @kelset tonight.