gst/multifile/gstmultifilesink.c: Add a fixme comment.

Original commit message from CVS:
* gst/multifile/gstmultifilesink.c:
Add a fixme comment.
* gst/selector/gstoutputselector.c:
Fix same leak as in input-selector.
* tests/icles/output-selector-test.c:
Improve the test.

gst/multifile/gstmultifilesink.c

@@ -151,6 +151,7 @@ gst_multi_file_sink_set_location (GstMultiFileSink * sink,
 {
   g_free (sink->filename);
   if (location != NULL) {
+    /* FIXME: validate location to have just one %d */
     sink->filename = g_strdup (location);
   } else {
     sink->filename = NULL;