stunnel: bump to version 5.18

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

package/stunnel/stunnel.hash

@@ -1,2 +1,2 @@
-# From https://www.stunnel.org/pipermail/stunnel-announce/2015-April/000100.html
-sha256	c3e79e582621a0827125e35e1c00450190104fc02dc3c5274cb02b05859fd472	stunnel-5.17.tar.gz
+# From http://www.stunnel.org/pipermail/stunnel-users/2015-June/005094.html
+sha256	0532c0a2f8de3da1ab625e384146501ce5936fac63d01561c3a9bf652b692317	stunnel-5.18.tar.gz

package/stunnel/stunnel.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 STUNNEL_VERSION_MAJOR = 5
-STUNNEL_VERSION = $(STUNNEL_VERSION_MAJOR).17
+STUNNEL_VERSION = $(STUNNEL_VERSION_MAJOR).18
 STUNNEL_SITE = http://www.usenix.org.uk/mirrors/stunnel/archive/$(STUNNEL_VERSION_MAJOR).x
 STUNNEL_DEPENDENCIES = openssl
 STUNNEL_CONF_OPTS = --with-ssl=$(STAGING_DIR)/usr --with-threads=fork \