Savedata minor

Referencing https://code.google.com/p/jpcsp/source/browse/trunk/src/jpcsp/HLE/modules150/sceUtility.java#1470 ,and depending on the error code feedback on PSP.
Fixes https://github.com/hrydgard/ppsspp/issues/4955 ,https://github.com/hrydgard/ppsspp/issues/6012 

The game using SCE_UTILITY_SAVEDATA_TYPE_READDATASECURE.
No save directory
![nosavedirectory](https://cloud.githubusercontent.com/assets/3481559/4503060/9ad5abf4-4ad2-11e4-9529-c86d1d790ade.png)

No PARAM.SFO
![rsfo1](https://cloud.githubusercontent.com/assets/3481559/4503064/b53c685c-4ad2-11e4-9ae6-7ba941ca5c4b.png)
![rsfo2](https://cloud.githubusercontent.com/assets/3481559/4503066/b887d28a-4ad2-11e4-9d2b-a46b8929c859.png)

No SYSTEM.BIN
![rsystem bin](https://cloud.githubusercontent.com/assets/3481559/4503068/c76e8d8e-4ad2-11e4-950f-f91ed781aaa7.png)