#946 mpv fails to play when cache is enabled

[rwman]

Smplayer Version: 19.5.0 (revision 9214)
Using Qt 5.13.1 (compiled with Qt 5.13.0)
Using MPV 0.30.0+git.1570361388.6d0f0546ee

go to preferences - performance - cache, uncheck "auto". result - mpv player crashes with error:

Error parsing option cache (option parameter could not be parsed)
Setting commandline option --cache=99999 failed.

[Ricardo Villalba]

I think this was already fixed in version 19.10.