fix for lua not installed

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.11-ssl-fixes@1308 152afb58-edef-0310-8abb-c4023f1b3aa9

src/mod_magnet_cache.c

@@ -1,12 +1,14 @@
 #include <stdlib.h>
-#include <lualib.h>
-#include <lauxlib.h>
 #include <time.h>
 #include <assert.h>
 
 #include "mod_magnet_cache.h"
 #include "stat_cache.h"
 
+#ifdef HAVE_LUA_H
+#include <lualib.h>
+#include <lauxlib.h>
+
 script *script_init() {
 	script *sc;
 
@@ -131,3 +133,5 @@ lua_State *script_cache_get_script(server *srv, connection *con, script_cache *c
 
 	return sc->L;
 }
+
+#endif

src/mod_magnet_cache.h

@@ -1,16 +1,21 @@
 #ifndef _MOD_MAGNET_CACHE_H_
 #define _MOD_MAGNET_CACHE_H_
 
-#include <lua.h>
-
 #include "buffer.h"
 #include "base.h"
 
+#ifdef HAVE_LUA_H
+#include <lua.h>
+#endif
+
+
 typedef struct {
 	buffer *name;
 	buffer *etag;
 
+#ifdef HAVE_LUA_H
 	lua_State *L;
+#endif
 
 	time_t last_used; /* LRU */
 } script;