do not save/restore errno around free() calls

In any non-buggy program free() does not fail.
And when it fails in a buggy program, the failure
is usually fatal (heap corruption and segfault).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/libc/inet/ifaddrs.c b/libc/inet/ifaddrs.c
index 1d54d5123..77ca7ce02 100644
--- a/libc/inet/ifaddrs.c
+++ b/libc/inet/ifaddrs.c
@@ -81,7 +81,6 @@ void
 __netlink_free_handle (struct netlink_handle *h)
 {
   struct netlink_res *ptr;
-  int saved_errno = errno;
 
   ptr = h->nlm_list;
   while (ptr != NULL)
@@ -89,11 +88,9 @@ __netlink_free_handle (struct netlink_handle *h)
       struct netlink_res *tmpptr;
 
       tmpptr = ptr->next;
-      free (ptr);
+      free (ptr); /* doesn't affect errno */
       ptr = tmpptr;
     }
-
-  __set_errno (saved_errno);
 }