[ticket/15305] Close stream before throwing an exception

PHPBB3-15305

phpBB/phpbb/storage/adapter/local.php

@@ -231,6 +231,7 @@ class local implements adapter_interface, stream_interface
 
 		if (stream_copy_to_stream($resource, $stream) === false)
 		{
+			fclose($stream);
 			throw new exception('STORAGE_CANNOT_COPY_RESOURCE');
 		}
 	}