From 8a099812dc626f36699fbef0dba05901ac0315b7 Mon Sep 17 00:00:00 2001
From: Han-Wen Nienhuys <hanwen@xs4all.nl>
Date: Tue, 20 Sep 2005 10:54:50 +0000
Subject: [PATCH] (process): don't crash if paper == NULL.

---
 lily/book.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lily/book.cc b/lily/book.cc
index 96a66ce00c..f007e62630 100644
--- a/lily/book.cc
+++ b/lily/book.cc
@@ -87,7 +87,9 @@ Book::process (Output_def *default_paper,
 	return 0;
 
   Output_def *paper = paper_ ? default_paper : paper_;
-
+  if (!paper)
+    return 0;
+  
   Paper_book *paper_book = new Paper_book ();
   Real scale = scm_to_double (paper->c_variable ("outputscale"));
   Output_def *scaled_bookdef = scale_output_def (paper, scale);
-- 
2.39.2