From 0ce14ba49cd6150e09a9dd32ea3451e3e47f16bf Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Thu, 21 Jun 2012 12:20:11 +0200
Subject: More fussiness

---
 libcrystfel/src/reflist.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'libcrystfel/src/reflist.c')

diff --git a/libcrystfel/src/reflist.c b/libcrystfel/src/reflist.c
index cea25bf3..64154774 100644
--- a/libcrystfel/src/reflist.c
+++ b/libcrystfel/src/reflist.c
@@ -900,6 +900,7 @@ struct _reflistiterator {
  **/
 Reflection *first_refl(RefList *list, RefListIterator **piter)
 {
+	Reflection *refl;
 	RefListIterator *iter;
 
 	iter = malloc(sizeof(struct _reflistiterator));
@@ -908,7 +909,9 @@ Reflection *first_refl(RefList *list, RefListIterator **piter)
 	iter->stack_ptr = 0;
 	*piter = iter;
 
-	Reflection *refl = list->head;
+	if ( list == NULL ) return NULL;
+
+	refl = list->head;
 
 	do {
 
-- 
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