cellMusicDecode: Do not early out if size_to_read is 0 and the position is POSITION_END

[Megamouse]

• cellMusicDecode: Do not early out if size_to_read is 0 and the position is POSITION_END

Probably fixes this case:
last call: track_fully_decoded == false, size_left == reqSize
next call: track_fully_decoded == true, size_left == 0

Maybe fixes #12309

[sean6on5]

Happy to help test this in the various EA games. I'm not super experienced compiling builds so if you have one ready it would be a help, but can also tinker with it myself (Windows).

[Darkhost1999]

Happy to help test this in the various EA games. I'm not super experienced compiling builds so if you have one ready it would be a help, but can also tinker with it myself (Windows).

https://wiki.rpcs3.net/index.php?title=Help:Using_different_versions_of_RPCS3#How_to_download_builds_from_a_pull_request_on_GitHub?

You can open the PR scroll to the bottom click the checks -> whatever you need Linux, MacOS, Windows.
Aim for Windows MSVC not clang for now if Windows.
The triple dots will lead you to the log. Then you click summary in the top left corner, scroll down and grab the download button for the build you want to test.

[sean6on5]

Hi - was able to test this in NHL Legacy Edition earlier today, same result as before where music wold not play. Log is attached.
RPCS3.log.gz
RPCS3.log