From 0886b0534fa6a48e452a9fd4dcfebc520e6afd7c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 22 Dec 2010 10:56:46 +0000
Subject: [PATCH] fix

---
 src/fs/fs_test_lib.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/fs/fs_test_lib.c b/src/fs/fs_test_lib.c
index 3112ce9a2..f24a11e82 100644
--- a/src/fs/fs_test_lib.c
+++ b/src/fs/fs_test_lib.c
@@ -580,7 +580,8 @@ file_generator (void *cls,
   uint8_t *cbuf = buf;
   int mod;
 
-  *emsg = NULL;
+  if (emsg != NULL)
+    *emsg = NULL;
   if (buf == NULL)
     return 0;
   for (pos=0;pos<8;pos++)
-- 
2.25.1