ext/pcntl: Pack module globals struct

This saves 8 bytes

Author: Girgias

ext/pcntl/php_pcntl.h

@@ -44,11 +44,11 @@ struct php_pcntl_pending_signal {
 ZEND_BEGIN_MODULE_GLOBALS(pcntl)
 	HashTable php_signal_table;
 	bool processing_signal_queue;
-	struct php_pcntl_pending_signal *head, *tail, *spares;
-	int last_error;
 	volatile bool pending_signals;
 	bool async_signals;
 	uint8_t num_signals;
+	int last_error;
+	struct php_pcntl_pending_signal *head, *tail, *spares;
 ZEND_END_MODULE_GLOBALS(pcntl)
 
 #if defined(ZTS) && defined(COMPILE_DL_PCNTL)