security/strongswan: Fix crash in public key authentication with 5.6.2

While here, added LICENSE_FILE.

PR:		226404
Submitted by:	strongswan@Nanoteq.com (maintainer)
Approved by:	tcberner (mentor, implicit)

security/strongswan/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	strongswan
 PORTVERSION=	5.6.2
+PORTREVISION=	1
 CATEGORIES=	security
 MASTER_SITES=	http://download.strongswan.org/ \
 		http://download2.strongswan.org/
@@ -11,6 +12,7 @@ MAINTAINER=	strongswan@nanoteq.com
 COMMENT=	Open Source IKEv2 IPsec-based VPN solution
 
 LICENSE=	GPLv2
+LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		cpe libtool:keepla pkgconfig tar:bzip2 ssl
 USE_RC_SUBR=	strongswan

security/strongswan/files/patch-src_libcharon_sa_ikev2_authenticators_pubkey_authenticator.c

@@ -0,0 +1,22 @@
+--- src/libcharon/sa/ikev2/authenticators/pubkey_authenticator.c.orig
++++ src/libcharon/sa/ikev2/authenticators/pubkey_authenticator.c
+@@ -164,7 +164,7 @@ static array_t *select_signature_schemes(keymat_v2_t *keymat,
+ 			signature_scheme_t schemes[] = {
+ 				SIGN_RSA_EMSA_PKCS1_SHA2_384,
+ 				SIGN_RSA_EMSA_PKCS1_SHA2_256,
+-			}, contained;
++			};
+ 			bool found;
+ 			int i, j;
+
+@@ -174,8 +174,8 @@ static array_t *select_signature_schemes(keymat_v2_t *keymat,
+ 				found = FALSE;
+ 				for (j = 0; j < array_count(selected); j++)
+ 				{
+-					array_get(selected, j, &contained);
+-					if (scheme == contained)
++					array_get(selected, j, &config);
++					if (scheme == config->scheme)
+ 					{
+ 						found = TRUE;
+ 						break;