[simple-scan/gnome-3-24: 1/3] Fix compilation with Vala 0.36. Based on a patch by David King

[Robert Ancell <rancell src gnome org>]

commit 7d9773efc9f6c3671b5a4322c6dbdf20f707782c
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Apr 26 11:01:04 2017 +1200

    Fix compilation with Vala 0.36. Based on a patch by David King

 src/ui.vala |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/ui.vala b/src/ui.vala
index 5e375c4..8d7a587 100644
--- a/src/ui.vala
+++ b/src/ui.vala
@@ -453,7 +453,11 @@ public class UserInterface : Gtk.ApplicationWindow
                 for (i = 0; i < n_delete; i++)
                 {
                     device_model.iter_nth_child (out iter, null, index);
+#if VALA_0_36
+                    device_model.remove (ref iter);
+#else
                     device_model.remove (iter);
+#endif
                 }
             }
             else
@@ -466,7 +470,11 @@ public class UserInterface : Gtk.ApplicationWindow
 
         /* Remove any remaining devices */
         while (device_model.iter_nth_child (out iter, null, index))
+#if VALA_0_36
+            device_model.remove (ref iter);
+#else
             device_model.remove (iter);
+#endif
 
         /* Select the previously selected device or the first available device */
         if (!have_selection)