hrydgard/ppsspp — pull request #5285 by unknownbrackets (2014-01-31 07:11:55+00:00)
Title: Match test in sceUmdUnRegisterUMDCallBack()

Seems that 0 is the unregistered value based on how it reacts to that param, and it should return 0 for success in newer sdk versions.

Shouldn't conflict with #5277. See also hrydgard/pspautotests#134.

-[Unknown]