Minor code cleaning for the function get_lang().

main/inc/lib/internationalization.lib.php

@@ -124,21 +124,14 @@ function get_lang($variable, $reserved = null, $language = null) {
 		$_api_is_translated, $_api_is_translated_call;
 
 	// Caching results from some API functions, for speed.
-	static $encoding, $is_utf8_encoding, $langpath, $test_server_mode, $show_special_markup;
-	if (!isset($is_utf8_encoding)) {
+	static $initialized, $encoding, $is_utf8_encoding, $langpath, $test_server_mode, $show_special_markup;
+	if (!isset($initialized)) {
 		$encoding = api_get_system_encoding();
-	}
-	if (!isset($is_utf8_encoding)) {
 		$is_utf8_encoding = api_is_utf8($encoding);
-	}
-	if (!isset($langpath)) {
 		$langpath = api_get_path(SYS_LANG_PATH);
-	}
-	if (!isset($test_server_mode)) {
 		$test_server_mode = api_get_setting('server_type') == 'test';
-	}
-	if (!isset($show_special_markup)) {
 		$show_special_markup = api_get_setting('hide_dltt_markup') != 'true' || $test_server_mode;
+		$initialized = true;
 	}
 
 	// Combining both ways for requesting specific language.