add forgotten ifdefs, fix #33667 (mysqli doesn't compile)

ext/mysqli/mysqli_fe.c

@@ -85,7 +85,9 @@ function_entry mysqli_functions[] = {
 	PHP_FE(mysqli_field_seek,							NULL)
 	PHP_FE(mysqli_field_tell,							NULL)
 	PHP_FE(mysqli_free_result,							NULL)
+#ifdef HAVE_MYSQLI_GET_CHARSET 
 	PHP_FE(mysqli_get_charset,							NULL)
+#endif
 	PHP_FE(mysqli_get_client_info,						NULL)
 	PHP_FE(mysqli_get_client_version,					NULL)
 	PHP_FE(mysqli_get_host_info,						NULL)
@@ -194,7 +196,9 @@ function_entry mysqli_link_methods[] = {
 	PHP_FALIAS(dump_debug_info,mysqli_dump_debug_info,NULL)
 	PHP_FALIAS(enable_reads_from_master,mysqli_enable_reads_from_master,NULL)
 	PHP_FALIAS(enable_rpl_parse,mysqli_enable_rpl_parse,NULL)
+#ifdef HAVE_MYSQLI_GET_CHARSET 
 	PHP_FALIAS(get_charset,mysqli_get_charset,NULL)
+#endif
 	PHP_FALIAS(get_client_info,mysqli_get_client_info,NULL)
 	PHP_FALIAS(get_server_info,mysqli_get_server_info,NULL)
 	PHP_FALIAS(get_warnings, mysqli_get_warnings, NULL)

ext/mysqli/php_mysqli.h

@@ -334,7 +334,9 @@ PHP_FUNCTION(mysqli_field_count);
 PHP_FUNCTION(mysqli_field_seek);
 PHP_FUNCTION(mysqli_field_tell);
 PHP_FUNCTION(mysqli_free_result);
+#ifdef HAVE_MYSQLI_GET_CHARSET 
 PHP_FUNCTION(mysqli_get_charset);
+#endif
 PHP_FUNCTION(mysqli_get_client_info);
 PHP_FUNCTION(mysqli_get_client_version);
 PHP_FUNCTION(mysqli_get_host_info);