[gnome-notes] keep ref of source so it isn't freed

[Isaque Galdino de Araujo <igaldino src gnome org>]

commit 0d82f13445361366efffdb914160c327a49614e8
Author: Kévin Commaille <zecakeh tedomum fr>
Date:   Tue May 18 12:19:13 2021 +0200

    keep ref of source so it isn't freed

 src/libbiji/provider/biji-memo-provider.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/libbiji/provider/biji-memo-provider.c b/src/libbiji/provider/biji-memo-provider.c
index 0f8ae285..4d1d48c2 100644
--- a/src/libbiji/provider/biji-memo-provider.c
+++ b/src/libbiji/provider/biji-memo-provider.c
@@ -641,6 +641,7 @@ biji_memo_provider_finalize (GObject *object)
   g_hash_table_unref (self->tracker);
   g_hash_table_unref (self->items);
   g_queue_free_full (self->queue, (GDestroyNotify) memo_item_free);
+  g_object_unref(self->source);
 
   G_OBJECT_CLASS (biji_memo_provider_parent_class)->finalize (object);
 }
@@ -660,6 +661,7 @@ biji_memo_provider_set_property (GObject      *object,
     {
     case PROP_SOURCE:
       self->source = g_value_get_object (value);
+      g_object_ref(self->source);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);