Fix the return type of ftp_raw() (#7466)

Author: kocsismate

ext/ftp/ftp.stub.php

@@ -26,7 +26,7 @@ function ftp_chdir($ftp, string $directory): bool {}
 function ftp_exec($ftp, string $command): bool {}
 
 /** @param resource $ftp */
-function ftp_raw($ftp, string $command): array {}
+function ftp_raw($ftp, string $command): ?array {}
 
 /** @param resource $ftp */
 function ftp_mkdir($ftp, string $directory): string|false {}

ext/ftp/ftp_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 4957601533b387d70ebb15811821fc06507cdbc2 */
+ * Stub hash: f47161a8575ef53f7c0fa6037c30e0c70462a281 */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_ftp_connect, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, hostname, IS_STRING, 0)
@@ -39,7 +39,7 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_ftp_exec, 0, 2, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, command, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_ftp_raw, 0, 2, IS_ARRAY, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_ftp_raw, 0, 2, IS_ARRAY, 1)
 	ZEND_ARG_INFO(0, ftp)
 	ZEND_ARG_TYPE_INFO(0, command, IS_STRING, 0)
 ZEND_END_ARG_INFO()