strongswan: security bump to version 5.0.4

Fixes CVE-2013-2944.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/strongswan/strongswan.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-STRONGSWAN_VERSION = 5.0.2
+STRONGSWAN_VERSION = 5.0.4
 STRONGSWAN_SOURCE = strongswan-$(STRONGSWAN_VERSION).tar.bz2
 STRONGSWAN_SITE = http://download.strongswan.org
 STRONGSWAN_LICENSE = GPLv2+