stunnel: update version to 5.73

Bugfixes
* Fixed a memory leak while reloading stunnel.conf sections with
  "client=yes" and "delay=no".
* Fixed TIMEOUTocsp with values greater than 4.
* Fix the IPv6 test on a non-IPv6 machine.

Features
* HELO replaced with EHLO in the post-STARTTLS SMTP protocol negotiation
* OCSP stapling fetches moved away from server threads.
* improved client-side session resumption.
* Added support for the mimalloc allocator.
* Check for protocolHost moved to configuration file processing for the
  client-side CONNECT protocol.
* Clarified some confusing OpenSSL's certificate verification error messages.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

net/stunnel/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=stunnel
-PKG_VERSION:=5.72
+PKG_VERSION:=5.73
 PKG_RELEASE:=1
 
 PKG_LICENSE:=GPL-2.0-or-later
@@ -23,11 +23,12 @@ PKG_SOURCE_URL:= \
 	https://www.usenix.org.uk/mirrors/stunnel/archive/$(word 1, $(subst .,$(space),$(PKG_VERSION))).x/
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_HASH:=3d532941281ae353319735144e4adb9ae489a10b7e309c58a48157f08f42e949
+PKG_HASH:=bc917c3bcd943a4d632360c067977a31e85e385f5f4845f69749bce88183cb38
 
 PKG_FIXUP:=autoreconf
 PKG_FIXUP:=patch-libtool
 PKG_INSTALL:=1
+PKG_BUILD_FLAGS:=no-mips16
 
 include $(INCLUDE_DIR)/package.mk