avtools: fix show_foo() signatures.

show_foo() functions are declared as void show_foo(void), but called as
int show_foo(const char*, const char*).

1 files changed, 4 insertions, 2 deletions

diff --git a/avplay.c b/avplay.c
index 3f2c4256c2..593b38af66 100644
--- a/avplay.c
+++ b/avplay.c
@@ -224,7 +224,7 @@ typedef struct VideoState {
     int refresh;
 } VideoState;
 
-static void show_help(void);
+static int show_help(const char *opt, const char *arg);
 
 /* options specified by the user */
 static AVInputFormat *file_iformat;
@@ -2922,7 +2922,7 @@ static void show_usage(void)
     printf("\n");
 }
 
-static void show_help(void)
+static int show_help(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
@@ -2949,6 +2949,8 @@ static void show_help(void)
            "down/up             seek backward/forward 1 minute\n"
            "mouse click         seek to percentage in file corresponding to fraction of width\n"
            );
+
+    return 0;
 }
 
 static void opt_input_file(void *optctx, const char *filename)