[gnome-software] Do not abort if a page does not handle the reload vfunc

[Richard Hughes <rhughes src gnome org>]

commit e813ae525a536eb2f6765c8cfb975eb6ba10bdfe
Author: Richard Hughes <richard hughsie com>
Date:   Thu Apr 13 17:43:13 2017 +0100

    Do not abort if a page does not handle the reload vfunc

 src/gs-page.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gs-page.c b/src/gs-page.c
index 6614eb4..818adf6 100644
--- a/src/gs-page.c
+++ b/src/gs-page.c
@@ -646,8 +646,8 @@ gs_page_reload (GsPage *page)
        GsPageClass *klass;
        g_return_if_fail (GS_IS_PAGE (page));
        klass = GS_PAGE_GET_CLASS (page);
-       g_assert (klass->reload != NULL);
-       klass->reload (page);
+       if (klass->reload != NULL)
+               klass->reload (page);
 }
 
 gboolean