[tracker-miners] tracker-extract-iso: Plug leaks

[Carlos Garnacho <carlosg src gnome org>]

commit ae122d55e64f0f15bcb6ad05423b8d9e8e336ab4
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Sep 9 12:28:43 2018 +0200

    tracker-extract-iso: Plug leaks

 src/tracker-extract/tracker-extract-iso.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-iso.c b/src/tracker-extract/tracker-extract-iso.c
index 66f3c629d..9be345004 100644
--- a/src/tracker-extract/tracker-extract-iso.c
+++ b/src/tracker-extract/tracker-extract-iso.c
@@ -109,6 +109,8 @@ tracker_extract_get_metadata (TrackerExtractInfo *info_)
                name = osinfo_product_get_name (OSINFO_PRODUCT (os));
        }
 
+       g_object_unref (variants);
+
        if (name != NULL) {
                tracker_resource_set_string (metadata, "nie:title", name);
        }
@@ -139,8 +141,9 @@ tracker_extract_get_metadata (TrackerExtractInfo *info_)
         }
         g_list_free (languages);
 
-       g_object_unref (G_OBJECT (media));
-       g_object_unref (G_OBJECT (loader));
+       g_object_unref (media);
+       g_object_unref (loader);
+       g_object_unref (os);
 
        tracker_extract_info_set_resource (info_, metadata);
        g_object_unref (metadata);