[seahorse] Ssh: KeyLengthChooser: forgot copyright header.

[Niels De Graef <nielsdg src gnome org>]

commit f36522f0e6be3944ac686d4c88ea29f48a597a63
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Wed Mar 7 18:41:28 2018 +0100

    Ssh: KeyLengthChooser: forgot copyright header.

 ssh/key-length-chooser.vala |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/ssh/key-length-chooser.vala b/ssh/key-length-chooser.vala
index 1590b0b..31fe399 100644
--- a/ssh/key-length-chooser.vala
+++ b/ssh/key-length-chooser.vala
@@ -1,3 +1,21 @@
+/*
+ * Seahorse
+ *
+ * Copyright (C) 2018 Niels De Graef
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/>.
+ */
 
 /**
  * The KeyLengthChooser allows the user choose the amount of bits a key should