[gtk/fix-event-match] shortcuttrigger: Don't trigger on key releases

[Matthias Clasen <matthiasc src gnome org>]

commit eb649d8204c9a4cf60b05c4941b05f0cad241af8
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Apr 6 19:16:41 2020 -0400

    shortcuttrigger: Don't trigger on key releases
    
    This broke when the event type check in gdk_key_event_matches
    was removed and replaced by a precondition that accepts both
    key press and release events.
    
    Add the check in gtk_keyval_trigger_trigger instead.

 gtk/gtkshortcuttrigger.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtkshortcuttrigger.c b/gtk/gtkshortcuttrigger.c
index 30ab0411ca..e6c8c016f8 100644
--- a/gtk/gtkshortcuttrigger.c
+++ b/gtk/gtkshortcuttrigger.c
@@ -516,6 +516,9 @@ gtk_keyval_trigger_trigger (GtkShortcutTrigger *trigger,
 {
   GtkKeyvalTrigger *self = GTK_KEYVAL_TRIGGER (trigger);
 
+  if (gdk_event_get_event_type (event) != GDK_KEY_PRESS)
+    return GDK_KEY_MATCH_NONE;
+
   return gdk_key_event_matches (event, self->keyval, self->modifiers);
 }