[gnome-builder] greeter: add accelerator mnemonics

[Christian Hergert <chergert src gnome org>]

commit 16c6d13cb51e2a0f39b5e9a753dc0ae685a6187c
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jan 21 19:09:16 2019 -0800

    greeter: add accelerator mnemonics

 src/libide/greeter/ide-greeter-workspace-actions.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libide/greeter/ide-greeter-workspace-actions.c 
b/src/libide/greeter/ide-greeter-workspace-actions.c
index 5a11649ac..b45c3c713 100644
--- a/src/libide/greeter/ide-greeter-workspace-actions.c
+++ b/src/libide/greeter/ide-greeter-workspace-actions.c
@@ -116,8 +116,8 @@ ide_greeter_workspace_actions_open (GSimpleAction *action,
                          "visible", TRUE,
                          NULL);
   gtk_dialog_add_buttons (GTK_DIALOG (dialog),
-                          _("Cancel"), GTK_RESPONSE_CANCEL,
-                          _("Open"), GTK_RESPONSE_OK,
+                          _("_Cancel"), GTK_RESPONSE_CANCEL,
+                          _("_Open"), GTK_RESPONSE_OK,
                           NULL);
   gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);