merged r465 from b1.2: fixed #102, Segmentation fault with xcache.var_size=1K

git-svn-id: svn://svn.lighttpd.net/xcache/trunk@467 c26eb9a1-5813-0410-bd6c-c2e55f420ca7

xcache.c

@@ -1650,11 +1650,12 @@ static int xc_init(int module_number TSRMLS_DC) /* {{{ */
 	return SUCCESS;
 
 err:
-	xc_destroy();
 	if (xc_php_caches || xc_var_caches) {
+		xc_destroy();
 		/* shm destroied in xc_destroy() */
 	}
 	else if (shm) {
+		xc_destroy();
 		xc_shm_destroy(shm);
 	}
 	return 0;