[ticket/17480] Use phpBB error message text instead of thrown by GuzzleHTTP

PHPBB-17480

Author: rxu

phpBB/language/en/common.php

@@ -357,6 +357,7 @@
 	'HIDE_ME'						=> 'Hide my online status this session',
 	'HOURS'							=> 'Hours',
 	'HOME'							=> 'Home',
+	'HTTP_HANDLER_NOT_FOUND'		=> 'The operation could not be completed because cURL PHP extension and allow_url_fopen PHP ini setting have been disabled and no other HTTP handler could be found.',
 
 	'ICQ'						=> 'ICQ',
 	'IF'						=> 'If',

phpBB/phpbb/file_downloader.php

@@ -82,7 +82,7 @@ public function get(string $host, string $directory, string $filename, int $port
 		}
 		catch (\RuntimeException $exception)
 		{
-			throw new runtime_exception($exception->getMessage());
+			throw new runtime_exception('HTTP_HANDLER_NOT_FOUND');
 		}
 
 		// Set default values for error variables