[recipes] Don't allow self-referential links

[Matthias Clasen <matthiasc src gnome org>]

commit 3e935d3081ebe8171ed5a15b9bf448aad6066bb5
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 3 20:55:54 2017 -0500

    Don't allow self-referential links
    
    Thats not useful, and can only lead to confusion.

 src/gr-edit-page.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-edit-page.c b/src/gr-edit-page.c
index 6c2b721..0ea88ed 100644
--- a/src/gr-edit-page.c
+++ b/src/gr-edit-page.c
@@ -846,10 +846,16 @@ recipe_filter_func (GtkListBoxRow *row,
 {
         GrEditPage *self = data;
         const char *cf;
+        GrRecipe *r;
 
         if (!self->recipe_term)
                 return TRUE;
 
+        r = GR_RECIPE (g_object_get_data (G_OBJECT (row), "recipe"));
+
+        if (strcmp (gr_recipe_get_id (r), gr_recipe_get_id (self->recipe)) == 0)
+                return FALSE;
+
         cf = (const char *)g_object_get_data (G_OBJECT (row), "term");
 
         return g_str_has_prefix (cf, self->recipe_term);