freeradius3: allow build without openssl engines

This applies a patch from upstream that avoids a call to ENGINE_cleanup
when the openssl library was built without engine support.

A workaround for a missing header check was used to silence a warning
about the implicit definition of RAND_load_file.  A proper fix has been
merged upstream as well.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

net/freeradius3/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=freeradius3
 PKG_VERSION:=release_3_0_17
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/FreeRADIUS/freeradius-server/archive
@@ -381,6 +381,13 @@ define Package/freeradius3-utils
   TITLE:=Misc. client utilities
 endef
 
+# This is a workaround for a bug in configure.ac, that does not check
+# for the openss/rand.h header.  Setting the macro is safe for openwrt,
+# and faster than rebuilding configure.
+# This has been fixed upstream in the 3.0.x branch, and should not be
+# needed in a future release.
+EXTRA_CFLAGS+= -DHAVE_OPENSSL_RAND_H
+
 CONFIGURE_ARGS+= \
 	--libdir=/usr/lib/freeradius3 \
 	--libexecdir=/usr/lib/freeradius3 \