tree fe21b847d00b451278c0f87da7cd4f64551bede1
parent a42fb3411662a95f3a1abe2a357c1a9a211c16d6
author Ozkan Sezer <sezeroz@gmail.com> 1602705663 +0300
committer Ozkan Sezer <sezeroz@gmail.com> 1602705663 +0300

os2/SDL_sysfilesystem.c: fix crash if one of the parameters is NULL

Has been happening with testfilesystem from 2.0.6 and newer because
of commit 083133ba8f9b.

Also set error strings in certain error conditions.

Also applied coding style / whitespace fixes, while I was there.