__attribute__: mark some functions with LAST_ARG_MUST_BE_NULL

Some varargs functions that use NULL-terminated parameter list were
missing __attributes__ ((sentinel)) aka LAST_ARG_MUST_BE_NULL.

Add them.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/attr.h b/attr.h
index 127998ae01..afa33ce3be 100644
--- a/attr.h
+++ b/attr.h
@@ -190,6 +190,8 @@ struct attr_check {
 };
 
 struct attr_check *attr_check_alloc(void);
+
+LAST_ARG_MUST_BE_NULL
 struct attr_check *attr_check_initl(const char *, ...);
 struct attr_check *attr_check_dup(const struct attr_check *check);