From 7cdb50e86604c33cfbf5e94ab56629f0bf92b804 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Mon, 31 Mar 2014 11:35:39 -0400
Subject: [PATCH] Handle tor_munmap_file(NULL) consistently

---
 src/common/compat.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/common/compat.c b/src/common/compat.c
index ead96ca30e..135f2c9af6 100644
--- a/src/common/compat.c
+++ b/src/common/compat.c
@@ -354,7 +354,9 @@ tor_mmap_file(const char *filename)
 int
 tor_munmap_file(tor_mmap_t *handle)
 {
-  tor_assert(handle != NULL);
+  if (handle == NULL)
+    return 0;
+
   if (handle->data) {
     /* This is an ugly cast, but without it, "data" in struct tor_mmap_t would
        have to be redefined as non-const. */
@@ -394,8 +396,9 @@ int
 tor_munmap_file(tor_mmap_t *handle)
 {
   char *d = NULL;
+  if (handle == NULL)
+    return 0;
 
-  tor_assert(handle != NULL);
   d = (char*)handle->data;
   tor_free(d);
   memwipe(handle, 0, sizeof(tor_mmap_t));