[recipes] Avoid a segfault for Anonymous recipes

[Matthias Clasen <matthiasc src gnome org>]

commit 6a7861e638face309c5e4d055d63c2b783625cc0
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 11 21:33:34 2016 -0500

    Avoid a segfault for Anonymous recipes
    
    We can't show more recipes by Anyonymous, so just hide the link.

 src/gr-details-page.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/src/gr-details-page.c b/src/gr-details-page.c
index a6ed297..89553c0 100644
--- a/src/gr-details-page.c
+++ b/src/gr-details-page.c
@@ -647,9 +647,14 @@ gr_details_page_set_recipe (GrDetailsPage *page,
         gtk_label_set_label (GTK_LABEL (page->chef_label), tmp);
         g_free (tmp);
 
-        tmp = g_strdup_printf (_("More recipes by %s"), author);
-        gtk_button_set_label (GTK_BUTTON (page->chef_link), tmp);
-        g_free (tmp);
+        if (page->chef) {
+                gtk_widget_show (page->chef_link);
+                tmp = g_strdup_printf (_("More recipes by %s"), author);
+                gtk_button_set_label (GTK_BUTTON (page->chef_link), tmp);
+                g_free (tmp);
+        }
+        else
+                gtk_widget_hide (page->chef_link);
 
         if (cooked > 0) {
                 gtk_widget_show (page->cooked_label);