Added name for PSP error code 0x80000023 and replaced the various uses of that error code number with its error code name.
Core/HLE/sceKernel.h: Added name for PSP error code 0x80000023 and replaced the used if its error number with its error code name.
Fixed line indentation.
Changed comment characters from /* */ to // .
Another line indentation fix.
Merge pull request #5791 from Felix-Dev/master

PSP error code 0x80000023 name update.