Make all option parsing functions match the function pointer type through which they are called.

All option parsing functions now match the function pointer signature through
which they are called (int f(const char *, const char *), thereby working
reliably on all platforms.
Prefix all option processing functions with opt_

1 files changed, 2 insertions, 1 deletions

diff --git a/ffprobe.c b/ffprobe.c
index a2b27c3745..fdcdf70273 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -353,7 +353,7 @@ static int opt_input_file(const char *opt, const char *arg)
     return 0;
 }
 
-static void show_help(void)
+static int opt_help(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
@@ -361,6 +361,7 @@ static void show_help(void)
     printf("\n");
     av_opt_show2(avformat_opts, NULL,
                  AV_OPT_FLAG_DECODING_PARAM, 0);
+    return 0;
 }
 
 static void opt_pretty(void)