hlsdemux: demote error to warning

It is not fatal and can be quite normal when the network is
too slow

diff --git a/ext/hls/m3u8.c b/ext/hls/m3u8.c
index 4b6e362..5e78d94 100755 (executable)
--- a/ext/hls/m3u8.c
+++ b/ext/hls/m3u8.c
@@ -1104,7 +1104,7 @@ alternate_advance (GstM3U8Client * client, gboolean forward)
       break;
   }
   if (tmp == NULL) {
-    GST_ERROR ("Can't find next fragment");
+    GST_WARNING ("Can't find next fragment");
     return;
   }
   client->current_file = tmp;