.memleak fix by Ronald Bultje. OK'd by Luca.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@9697 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/rtsp.c

@@ -814,6 +814,8 @@ static void rtsp_send_cmd(AVFormatContext *s,
     }
     if (content_ptr)
         *content_ptr = content;
+    else
+        av_free(content);
 }