[recipes/recipes-1.0] Avoid a crash in the recipe importer

[Matthias Clasen <matthiasc src gnome org>]

commit 00ca8bd8ffeacb5935538ff807c5f5bf682be4bc
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue May 16 08:10:44 2017 -0400

    Avoid a crash in the recipe importer
    
    When no chef information is provided, we should show
    an error right away instead of crashing later.

 src/gr-recipe-importer.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/src/gr-recipe-importer.c b/src/gr-recipe-importer.c
index d6bb843..3c15cf1 100644
--- a/src/gr-recipe-importer.c
+++ b/src/gr-recipe-importer.c
@@ -751,6 +751,7 @@ import_chefs (GrRecipeImporter *importer)
         g_autoptr(GKeyFile) keyfile = NULL;
         g_autofree char *path = NULL;
         g_autoptr(GError) error = NULL;
+        gsize length;
 
         g_assert (importer->chefs_keyfile == NULL);
         g_assert (importer->chef_ids == NULL);
@@ -764,7 +765,14 @@ import_chefs (GrRecipeImporter *importer)
         }
 
         importer->chefs_keyfile = g_key_file_ref (keyfile);
-        importer->chef_ids = g_key_file_get_groups (keyfile, NULL);
+        importer->chef_ids = g_key_file_get_groups (keyfile, &length);
+        if (length == 0) {
+                g_set_error (&error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                             _("No chef information found"));
+                error_cb (importer->extractor, error, importer);
+                return FALSE;
+        }
+
         return import_next_chef (importer);
 }