avformat: do away with strang stream_Tell >= stream_Size check.

modules/demux/avformat/demux.c

@@ -514,19 +514,16 @@ static offset_t IOSeek( void *opaque, offset_t offset, int whence )
     }
     if( i_absolute < 0 )
         i_absolute = 0;
-    if( i_size )
-    {
-        if( i_absolute > i_size )
-            i_absolute = i_size;
-        if( stream_Tell( p_demux->s ) >= i_size )
+
+    if( i_size && i_absolute >= i_size )
     {
-            msg_Err( p_demux, "Seeking too far : EOF?" );
+        msg_Dbg( p_demux, "Trying to seek too far : EOF?" );
         return -1;
     }
-    }
 
     if( stream_Seek( p_demux->s, i_absolute ) )
     {
+        msg_Warn( p_demux, "we were not allowed to seek, or EOF " );
         return -1;
     }