stunnel: bump to version 5.28

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-December/000113.html
-sha256	7474e986710e88a5cc3330b6b1762f9449f01eccf826fa0f97e56d064c05ead3	stunnel-5.27.tar.gz
+# From http://www.stunnel.org/pipermail/stunnel-announce/2015-December/000115.html
+sha256	9a25b87b1ef0c08fa3d796edce07b4408e6a8acece23de2eb7ee9285b78852b5	stunnel-5.28.tar.gz

package/stunnel/stunnel.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 STUNNEL_VERSION_MAJOR = 5
-STUNNEL_VERSION = $(STUNNEL_VERSION_MAJOR).27
+STUNNEL_VERSION = $(STUNNEL_VERSION_MAJOR).28
 STUNNEL_SITE = http://www.usenix.org.uk/mirrors/stunnel/archive/$(STUNNEL_VERSION_MAJOR).x
 STUNNEL_DEPENDENCIES = openssl
 STUNNEL_CONF_OPTS = --with-ssl=$(STAGING_DIR)/usr --with-threads=fork \