[recipes] units: Allow completing pure numbers

[Matthias Clasen <matthiasc src gnome org>]

commit fbe53d982334e0deaedabf95e749635fb99f8890
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat May 27 12:04:32 2017 -0400

    units: Allow completing pure numbers
    
    For cases like "6 eggs", make the plain number show up
    in the completions.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783151

 src/gr-ingredients-viewer-row.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-ingredients-viewer-row.c b/src/gr-ingredients-viewer-row.c
index 47c9be1..4d6433d 100644
--- a/src/gr-ingredients-viewer-row.c
+++ b/src/gr-ingredients-viewer-row.c
@@ -731,6 +731,10 @@ get_units_model (GrIngredientsViewerRow *row)
                                                       GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
                                                       GTK_SORT_ASCENDING);
 
+                gtk_list_store_insert_with_values (store, NULL, -1,
+                                                   0, "",
+                                                   -1);
+
                 names = gr_unit_get_names ();
                 for (i = 0; names[i]; i++) {
                         gtk_list_store_insert_with_values (store, NULL, -1,