[gnome-software] overview page: Use N_TILES instead of hardcoded 6

[Kalev Lember <klember src gnome org>]

commit e6695e34c25b48f704383d7a369e8af5e9e1417e
Author: Kalev Lember <klember redhat com>
Date:   Mon Jan 22 13:21:11 2018 +0100

    overview page: Use N_TILES instead of hardcoded 6

 src/gs-overview-page.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-overview-page.c b/src/gs-overview-page.c
index b8cdcbd..6bf37a0 100644
--- a/src/gs-overview-page.c
+++ b/src/gs-overview-page.c
@@ -216,7 +216,7 @@ gs_overview_page_get_recent_cb (GObject *source_object, GAsyncResult *res, gpoin
        }
 
        /* not enough to show */
-       if (gs_app_list_length (list) < 6) {
+       if (gs_app_list_length (list) < N_TILES) {
                g_warning ("Only %u apps for recent list, hiding",
                           gs_app_list_length (list));
                gtk_widget_set_visible (priv->box_recent, FALSE);