[gtk+/wip/carlosg/event-delivery] combobox: Only react to UP/DOWN scroll events

[Timm Bäder <baedert src gnome org>]

commit 14080d24dac93d7e13f1d56b34fb965c1e4ff9ca
Author: Timm Bäder <mail baedert org>
Date:   Tue May 9 08:22:41 2017 +0200

    combobox: Only react to UP/DOWN scroll events
    
    The old else block scrolled down for everything except GDK_SCROLL_UP
    scroll events, e.g. for smooth scroll events.

 gtk/gtkcombobox.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index e07a183..fd9b01a 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -1953,7 +1953,7 @@ gtk_combo_box_scroll_event (GtkWidget          *widget,
   if (event->direction == GDK_SCROLL_UP)
     found = tree_prev (combo_box, priv->model,
                        &iter, &new_iter);
-  else
+  else if (event->direction == GDK_SCROLL_DOWN)
     found = tree_next (combo_box, priv->model,
                        &iter, &new_iter);