obj_dat: don't shift ca->type into the sign bit

This is undefined for a ca->type of ADDED_LNAME (2) and ADDED_NID (3)
when ca->type << 30L results in a shift into the sign bit, so add a
cast to the target type of unsigned long.

From Kenjiro Nakayama

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/objects/obj_dat.c b/src/lib/libcrypto/objects/obj_dat.c
index 53ae83784f..ed8140b54a 100644
--- a/src/lib/libcrypto/objects/obj_dat.c
+++ b/src/lib/libcrypto/objects/obj_dat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: obj_dat.c,v 1.91 2024/07/14 14:32:45 jsing Exp $ */
+/* $OpenBSD: obj_dat.c,v 1.92 2025/02/26 09:49:54 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -118,7 +118,7 @@ added_obj_hash(const ADDED_OBJ *ca)
                 return 0;
         }
         ret &= 0x3fffffffL;
-        ret |= ca->type << 30L;
+        ret |= (unsigned long)ca->type << 30L;
         return (ret);
 }
 static IMPLEMENT_LHASH_HASH_FN(added_obj, ADDED_OBJ)