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Diffstat (limited to 'nss/nss_db/db-open.c')
-rw-r--r--nss/nss_db/db-open.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/nss/nss_db/db-open.c b/nss/nss_db/db-open.c
index 8538f8e961..a60bed97de 100644
--- a/nss/nss_db/db-open.c
+++ b/nss/nss_db/db-open.c
@@ -1,5 +1,5 @@
/* Common database routines for nss_db.
- Copyright (C) 2000-2018 Free Software Foundation, Inc.
+ Copyright (C) 2000-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
@@ -63,5 +63,9 @@ internal_setent (const char *file, struct nss_db_map *mapping)
void
internal_endent (struct nss_db_map *mapping)
{
- munmap (mapping->header, mapping->len);
+ if (mapping->header != NULL)
+ {
+ munmap (mapping->header, mapping->len);
+ mapping->header = NULL;
+ }
}