missing NULL checks to see if init is needed. found hard way by deraadt.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib/libc/crypt/arc4random.c b/src/lib/libc/crypt/arc4random.c
index 57decde1f8..7ff1495fc4 100644
--- a/src/lib/libc/crypt/arc4random.c
+++ b/src/lib/libc/crypt/arc4random.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: arc4random.c,v 1.29 2014/05/06 15:37:57 tedu Exp $    */
+/*      $OpenBSD: arc4random.c,v 1.30 2014/05/06 16:06:33 tedu Exp $    */
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -63,10 +63,10 @@ _rs_init(u_char *buf, size_t n)
         if (n < KEYSZ + IVSZ)
                 return;
 
-        if ((rs = mmap(NULL, sizeof(*rs), PROT_READ|PROT_WRITE,
+        if (rs == NULL && (rs = mmap(NULL, sizeof(*rs), PROT_READ|PROT_WRITE,
             MAP_ANON, -1, 0)) == MAP_FAILED)
                 abort();
-        if ((rs_buf = mmap(NULL, RSBUFSZ, PROT_READ|PROT_WRITE,
+        if (rs_buf == NULL && (rs_buf = mmap(NULL, RSBUFSZ, PROT_READ|PROT_WRITE,
             MAP_ANON, -1, 0)) == MAP_FAILED)
                 abort();