[eog] eog-list-store: unref a dangling EogImage reference

[Claudio Saavedra <csaavedra src gnome org>]

commit 8032c8a0c6700966afbe77632c03a00ae9a878d0
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Tue May 22 13:08:03 2018 +0300

    eog-list-store: unref a dangling EogImage reference
    
    https://bugzilla.gnome.org/show_bug.cgi?id=674284

 src/eog-list-store.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/eog-list-store.c b/src/eog-list-store.c
index a7f65635..e3046382 100644
--- a/src/eog-list-store.c
+++ b/src/eog-list-store.c
@@ -286,6 +286,7 @@ eog_job_thumbnail_cb (EogJobThumbnail *job, gpointer data)
                                    EOG_LIST_STORE_EOG_JOB, NULL,
                                    -1);
 
+               g_object_unref (image);
                g_object_unref (thumbnail);
        }