[longomatch] Fix frame stepping bug when getting a wrong accurate value

[Andoni Morales Alastruey <amorales src gnome org>]

commit 69b14986953f4259aac0777d6f11590700c6fb21
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Mon Sep 14 17:00:34 2009 +0200

    Fix frame stepping bug when getting a wrong accurate value

 libcesarplayer/src/bacon-video-widget-gst-0.10.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/libcesarplayer/src/bacon-video-widget-gst-0.10.c b/libcesarplayer/src/bacon-video-widget-gst-0.10.c
index b91a6c6..bfa5c04 100644
--- a/libcesarplayer/src/bacon-video-widget-gst-0.10.c
+++ b/libcesarplayer/src/bacon-video-widget-gst-0.10.c
@@ -3237,6 +3237,8 @@ bacon_video_widget_seek_to_next_frame (BaconVideoWidget *bvw, gfloat rate, gbool
   	fps = (bvw->priv->video_fps_n + bvw->priv->video_fps_d/2) /
                   bvw->priv->video_fps_d;
     pos = bacon_video_widget_get_accurate_current_time(bvw);
+    if (pos==0)
+	return FALSE;
     final_pos = pos*GST_MSECOND + 1*GST_SECOND/fps;
 
 /*#ifdef WIN32
@@ -3283,6 +3285,8 @@ gboolean  bacon_video_widget_seek_to_previous_frame (BaconVideoWidget *bvw,gfloa
     pos = bacon_video_widget_get_accurate_current_time(bvw);
     final_pos = pos*GST_MSECOND - 1*GST_SECOND/fps;
 
+	if (pos==0)
+		return FALSE;
 /*#ifdef WIN32
 	bacon_video_widget_play(bvw);
 #endif