reduce the struct size by 8 byte on x64

Author: weltling

main/php_output.h

@@ -143,12 +143,12 @@ typedef struct _php_output_handler {
 } php_output_handler;
 
 ZEND_BEGIN_MODULE_GLOBALS(output)
-	int flags;
 	zend_stack handlers;
 	php_output_handler *active;
 	php_output_handler *running;
 	const char *output_start_filename;
 	int output_start_lineno;
+	int flags;
 ZEND_END_MODULE_GLOBALS(output)
 
 /* there should not be a need to use OG() from outside of output.c */