Revert to require_once

Keeping these statements as they were.

include/identity.php

@@ -95,7 +95,7 @@ function profile_load(App $a, $nickname, $profile = 0, $profiledata = array())
 
 	$theme_info_file = "view/theme/" . current_theme() . "/theme.php";
 	if (file_exists($theme_info_file)) {
-		include_once $theme_info_file;
+		require_once $theme_info_file;
 	}
 
 	if (! (x($a->page, 'aside'))) {
@@ -579,7 +579,7 @@ function get_birthdays()
 
 function get_events()
 {
-	include_once 'include/bbcode.php';
+	require_once 'include/bbcode.php';
 
 	$a = get_app();
 

include/queue.php

@@ -68,7 +68,7 @@ function queue_run(&$argv, &$argc)
 
 	// delivering
 
-	include_once 'include/salmon.php';
+	require_once 'include/salmon.php';
 
 	$r = q(
 		"SELECT * FROM `queue` WHERE `id` = %d LIMIT 1",