[FFmpeg-cvslog] cmdutils: show options in show_help_children only if the context has options

[Stefano Sabatini]

ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Thu Aug  9 14:44:18 2012 +0200| [ad5043e285865cb9297e32ce25da93841cf76d3f] | committer: Stefano Sabatini

cmdutils: show options in show_help_children only if the context has options

Avoid to print a pointless name of the context followed by an empty list.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ad5043e285865cb9297e32ce25da93841cf76d3f
---

 cmdutils.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmdutils.c b/cmdutils.c
index 7d71d65..6859692 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -168,8 +168,10 @@ void show_help_options(const OptionDef *options, const char *msg, int mask,
 void show_help_children(const AVClass *class, int flags)
 {
     const AVClass *child = NULL;
-    av_opt_show2(&class, NULL, flags, 0);
-    printf("\n");
+    if (class->option) {
+        av_opt_show2(&class, NULL, flags, 0);
+        printf("\n");
+    }
 
     while (child = av_opt_child_class_next(class, child))
         show_help_children(child, flags);