[xmlsec] bump the limit even more bug #745269

[Aleksey Sanin <aleksey src gnome org>]

commit 9d8632147d76717872d73d595cd9a1274d251a79
Author: Aleksey Sanin <aleksey aleksey com>
Date:   Sat Feb 28 10:54:26 2015 -0800

    bump the limit even more bug #745269

 src/openssl/signatures.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/openssl/signatures.c b/src/openssl/signatures.c
index 5a9e62e..2fd3d35 100644
--- a/src/openssl/signatures.c
+++ b/src/openssl/signatures.c
@@ -51,6 +51,10 @@ static const EVP_MD *xmlSecOpenSSLDsaSha256Evp                  (void);
  * in the RFC 3447 [PKCS1] specification with the l parameter equal to the size of
  * the base point order of the curve in bytes (e.g. 32 for the P-256 curve and 66
  * for the P-521 curve).
+ *
+ * Also see https://bugzilla.gnome.org/show_bug.cgi?id=745269 for discussion
+ * about this constant and why it is large.
+ * 
  */
 #define XMLSEC_OPENSSL_ECDSA_SIGNATURE_MAX_SIZE                 (2 * 128)