[gimp] Issue #3140 - Export as DDS dialog does not have an Export button

[Jehan <jehanp src gnome org>]

commit d7a4d5c6a8423e7e23aaeb0eefc9a31a6866381c
Author: Sabri Ünal <libreajans gmail com>
Date:   Fri May 10 14:23:25 2019 +0000

    Issue #3140 - Export as DDS dialog does not have an Export button

 plug-ins/file-dds/ddswrite.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/plug-ins/file-dds/ddswrite.c b/plug-ins/file-dds/ddswrite.c
index d3ec960790..329690324b 100644
--- a/plug-ins/file-dds/ddswrite.c
+++ b/plug-ins/file-dds/ddswrite.c
@@ -1884,8 +1884,8 @@ save_dialog (gint32 image_id,
 
   dlg = gimp_dialog_new (_("Export as DDS"), "dds", NULL, GTK_WIN_POS_MOUSE,
                          gimp_standard_help_func, SAVE_PROC,
-                         _("Cancel"), GTK_RESPONSE_CANCEL,
-                         _("OK"),     GTK_RESPONSE_OK,
+                         _("_Cancel"), GTK_RESPONSE_CANCEL,
+                         _("_Export"), GTK_RESPONSE_OK,
                          NULL);
 
   g_signal_connect (dlg, "response",