[tracker] tracker-extract: FLAC metadata iterator wasn't closed

[Carlos Garnacho <carlosg src gnome org>]

commit 24f5aedc7bfc5a69f3e10a6d1ea81787b1b3abc9
Author: Andrew Branson <andrew branson jollamobile com>
Date:   Wed Oct 12 14:27:35 2016 +0200

    tracker-extract: FLAC metadata iterator wasn't closed
    
    It must be closed after iterating, otherwise we leak fds.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=772799

 src/tracker-extract/tracker-extract-flac.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-flac.c b/src/tracker-extract/tracker-extract-flac.c
index 9cc29d2..fcdd45a 100644
--- a/src/tracker-extract/tracker-extract-flac.c
+++ b/src/tracker-extract/tracker-extract-flac.c
@@ -212,6 +212,8 @@ tracker_extract_get_metadata (TrackerExtractInfo *info)
        tracker_resource_add_uri (metadata, "rdf:type", "nmm:MusicPiece");
        tracker_resource_add_uri (metadata, "rdf:type", "nfo:Audio");
 
+       FLAC__metadata_simple_iterator_delete (iter);
+
        creator = tracker_coalesce_strip (3, fd.artist, fd.albumartist,
                                          fd.performer);