options: list correct default value for --screenshot-template

Make the default value part of the option metadata, instead of doing
this in the screenshot code. Makes more sense with --list-options and
the command.c option metadata properties.

1 files changed, 1 insertions, 1 deletions

diff --git a/player/screenshot.c b/player/screenshot.c
index 702e2dd766..0f0ac72419 100644
--- a/player/screenshot.c
+++ b/player/screenshot.c
@@ -129,7 +129,7 @@ static char *create_fname(struct MPContext *mpctx, char *template,
     struct tm *local_time = localtime(&raw_time);
 
     if (!template || *template == '\0')
-        template = "shot%n";
+        return NULL;
 
     for (;;) {
         char *next = strchr(template, '%');