[balsa] Fix Greek translation of default:mm

[Piotr Drąg <piotrdrag src gnome org>]

commit 36c31045e8b4833dc0625ec77af05710c20e59c8
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Sep 26 15:55:22 2015 +0200

    Fix Greek translation of default:mm

 po/el.po |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/el.po b/po/el.po
index d4c286f..11becaf 100644
--- a/po/el.po
+++ b/po/el.po
@@ -6592,7 +6592,7 @@ msgstr[1] ""
 #.
 #: ../src/print-gtk.c:392
 msgid "default:mm"
-msgstr "προεπιλογή:mm"
+msgstr "default:mm"
 
 #: ../src/print-gtk.c:449
 msgid "inch"