libavi: don't limit probing to movi when non-fastseekable

modules/demux/avi/libavi.c

@@ -126,7 +126,7 @@ static int AVI_ChunkRead_list( stream_t *s, avi_chunk_t *p_container )
         return VLC_EGENERIC;
     }
 
-    stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
+    stream_Control( s, STREAM_CAN_SEEK, &b_seekable );
 
     p_container->list.i_type = GetFOURCC( p_peek + 8 );
 
@@ -1051,7 +1051,7 @@ int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
     avi_chunk_t      *p_chk;
     bool b_seekable;
 
-    stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
+    stream_Control( s, STREAM_CAN_SEEK, &b_seekable );
 
     p_list->i_chunk_pos  = 0;
     p_list->i_chunk_size = stream_Size( s );