[network-manager-openvpn] Add translator comment

[Wouter Bolsterlee <wbolster src gnome org>]

commit b1a37e9c6f1edd0119ee842d28af73370e82c618
Author: Wouter Bolsterlee <wbolster gnome org>
Date:   Sat Dec 3 20:58:20 2011 +0100

    Add translator comment

 src/nm-openvpn-service.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/nm-openvpn-service.c b/src/nm-openvpn-service.c
index e6e177a..852d3cb 100644
--- a/src/nm-openvpn-service.c
+++ b/src/nm-openvpn-service.c
@@ -211,6 +211,7 @@ validate_one_property (const char *key, const char *value, gpointer user_data)
 			g_set_error (info->error,
 			             NM_VPN_PLUGIN_ERROR,
 			             NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
+			             /* Translators: keep "yes" and "no" untranslated! */
 			             _("invalid boolean property '%s' (not yes or no)"),
 			             key);
 			break;