[gnome-keyring] Add translator comment about 'pinned certificate'

[Claude Paroz <claudep src gnome org>]

commit 0069068377999ec07b4703e54c604d5091a1e739
Author: Claude Paroz <claude 2xlibre net>
Date:   Wed Feb 9 21:20:48 2011 +0100

    Add translator comment about 'pinned certificate'

 gcr/gcr-trust.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gcr/gcr-trust.c b/gcr/gcr-trust.c
index f53ee91..c252c33 100644
--- a/gcr/gcr-trust.c
+++ b/gcr/gcr-trust.c
@@ -414,6 +414,9 @@ perform_add_pinned_certificate (GckEnumerator *en, GCancellable *cancellable, GE
 	slot = gcr_pkcs11_get_trust_store_slot ();
 	if (slot == NULL) {
 		g_set_error (error, GCK_ERROR, CKR_FUNCTION_FAILED,
+		             /* Translators: A pinned certificate is an exception which
+		                trusts a given certificate explicitly for a purpose and
+		                communication with a certain peer. */
 		             _("Couldn't find a place to store the pinned certificate"));
 		ret = FALSE;
 	} else {