Perform another PS1 eboot check before checking the PSAR magic.
It seems as if some PS1 eboots out there are malformed and will get past the PSISOIMG0000 check, so check the PARAM.SFO category, too. If the eboot gets past that too, PPSSPP will probably still crash, so we're screwed at that point anyway.
Get rid of redundant ERROR_LOG.
Merge pull request #5600 from thedax/additionalPS1EbootCheck

Perform another PS1 eboot check before checking the PSAR magic.