uhttpd: do not configure TLS parameters if libustream-ssl is not present

A quite frequent problem after sysupgrading from an older, SSL enabled build
is that ustream-ssl is not installed so uhttpd fails to come up again due to
https listening directives in the preserved configuration.

Skip key/cert and ssl listen options when libustream-ssl.so is not present.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

SVN-Revision: 42284

package/network/services/uhttpd/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2010-2013 Jo-Philipp Wich <jow@openwrt.org>
+# Copyright (C) 2010-2014 Jo-Philipp Wich <jow@openwrt.org>
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=uhttpd
-PKG_VERSION:=2014-06-11
+PKG_VERSION:=2014-08-25
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git

package/network/services/uhttpd/files/uhttpd.init

@@ -109,7 +109,7 @@ start_instance()
 	config_get UHTTPD_KEY  "$cfg" key  /etc/uhttpd.key
 	config_get UHTTPD_CERT "$cfg" cert /etc/uhttpd.crt
 
-	[ -n "$https" ] && {
+	[ -f /lib/libustream-ssl.so ] && [ -n "$https" ] && {
 		[ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] || {
 			config_foreach generate_keys cert
 		}