[grilo-plugins] metadata-store: set finalize function to clean up

[Victor Toso de Carvalho <victortoso src gnome org>]

commit 475044bb54e36b5f91d657423a3da7934ad71423
Author: Victor Toso <me victortoso com>
Date:   Wed Mar 1 22:36:45 2017 +0100

    metadata-store: set finalize function to clean up
    
    514,040 (80 direct, 513,960 indirect) bytes in 1 blocks are definitely lost in loss record 19,311 of 
19,314
       at 0x4C2DB9D: malloc (vg_replace_malloc.c:299)
       by 0x222277D6: sqlite3MemMalloc (sqlite3.c:20398)
       by 0x22202967: mallocWithAlarm (sqlite3.c:24067)
       by 0x22202967: sqlite3Malloc (sqlite3.c:24098)
       by 0x22202A0D: sqlite3MallocZero (sqlite3.c:24398)
       by 0x222499F5: sqlite3BtreeOpen (sqlite3.c:60320)
       by 0x22297786: openDatabase (sqlite3.c:139437)
       by 0x2662D0B0: grl_metadata_store_source_init (grl-metadata-store.c:237)
       by 0x53C07FA: g_type_create_instance (gtype.c:1866)
       by 0x53A269A: g_object_new_internal (gobject.c:1783)
       by 0x53A45AD: g_object_new_valist (gobject.c:2042)
       by 0x53A4850: g_object_new (gobject.c:1626)
       by 0x2662CF9E: grl_metadata_store_source_new (grl-metadata-store.c:194)
       by 0x2662CF9E: grl_metadata_store_source_plugin_init (grl-metadata-store.c:167)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779444

 src/metadata-store/grl-metadata-store.c |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)
---
diff --git a/src/metadata-store/grl-metadata-store.c b/src/metadata-store/grl-metadata-store.c
index 1e107a2..cab80b8 100644
--- a/src/metadata-store/grl-metadata-store.c
+++ b/src/metadata-store/grl-metadata-store.c
@@ -121,6 +121,8 @@ enum {
   MEDIA_CONTAINER
 };
 
+static void grl_metadata_store_source_class_finalize (GObject *object);
+
 static GrlMetadataStoreSource *grl_metadata_store_source_new (void);
 
 static void grl_metadata_store_source_resolve (GrlSource *source,
@@ -148,6 +150,7 @@ gboolean grl_metadata_store_source_plugin_init (GrlRegistry *registry,
                                                 GrlPlugin *plugin,
                                                 GList *configs);
 
+G_DEFINE_TYPE (GrlMetadataStoreSource, grl_metadata_store_source, GRL_TYPE_SOURCE);
 
 /* =================== GrlMetadataStore Plugin  =============== */
 
@@ -201,8 +204,11 @@ grl_metadata_store_source_new (void)
 static void
 grl_metadata_store_source_class_init (GrlMetadataStoreSourceClass * klass)
 {
+  GObjectClass *g_class = G_OBJECT_CLASS (klass);
   GrlSourceClass *source_class = GRL_SOURCE_CLASS (klass);
 
+  g_class->finalize = grl_metadata_store_source_class_finalize;
+
   source_class->supported_keys = grl_metadata_store_source_supported_keys;
   source_class->writable_keys = grl_metadata_store_source_writable_keys;
   source_class->get_caps = grl_metadata_store_source_get_caps;
@@ -215,6 +221,16 @@ grl_metadata_store_source_class_init (GrlMetadataStoreSourceClass * klass)
 }
 
 static void
+grl_metadata_store_source_class_finalize (GObject *object)
+{
+  GrlMetadataStoreSource *source = GRL_METADATA_STORE_SOURCE (object);
+
+  sqlite3_close (source->priv->db);
+
+  G_OBJECT_CLASS (grl_metadata_store_source_parent_class)->finalize (object);
+}
+
+static void
 grl_metadata_store_source_init (GrlMetadataStoreSource *source)
 {
   gint r;
@@ -274,10 +290,6 @@ grl_metadata_store_source_init (GrlMetadataStoreSource *source)
   GRL_DEBUG ("  OK");
 }
 
-G_DEFINE_TYPE (GrlMetadataStoreSource,
-               grl_metadata_store_source,
-               GRL_TYPE_SOURCE);
-
 /* ======================= Utilities ==================== */
 
 static sqlite3_stmt *