options: simplify M_OPT_EXIT

There were multiple values under M_OPT_EXIT (M_OPT_EXIT-n for n>=0).
Somehow M_OPT_EXIT-n either meant error code n (with n==0 no error?), or
the number of option valus consumed (0 or 1). The latter is MPlayer
legacy, which left it to the option type parsers to determine whether an
option took a value or not. All of this was changed in mpv, by requiring
the user to use explicit syntax ("--opt=val" instead of "-opt val").

In any case, the n value wasn't even used (anymore), so rip this all
out. Now M_OPT_EXIT-1 doesn't mean anything, and could be used by a new
error code.

1 files changed, 1 insertions, 1 deletions

diff --git a/audio/out/ao_openal.c b/audio/out/ao_openal.c
index 2c29b8923b..237226e4a5 100644
--- a/audio/out/ao_openal.c
+++ b/audio/out/ao_openal.c
@@ -96,7 +96,7 @@ static int validate_device_opt(struct mp_log *log, const m_option_t *opt,
             mp_info(log, "  '%s'\n", list);
             list = list + strlen(list) + 1;
         }
-        return M_OPT_EXIT - 1;
+        return M_OPT_EXIT;
     }
     return 0;
 }