revert stream cast

Author: m6w6

main/php_streams.h

@@ -242,7 +242,7 @@ PHPAPI php_stream *_php_stream_alloc(php_stream_ops *ops, void *abstract,
 END_EXTERN_C()
 #define php_stream_alloc(ops, thisptr, persistent_id, mode)	_php_stream_alloc((ops), (thisptr), (persistent_id), (mode) STREAMS_CC TSRMLS_CC)
 
-#define php_stream_get_resource_id(stream)		((php_stream *)(stream))->rsrc_id
+#define php_stream_get_resource_id(stream)		(stream)->rsrc_id
 #if ZEND_DEBUG
 /* use this to tell the stream that it is OK if we don't explicitly close it */
 # define php_stream_auto_cleanup(stream)	{ (stream)->__exposed++; }