line-log.c: prevent crash during union of too many ranges

diff --git a/mailmap.c b/mailmap.c
index b5c521fdea8b0bfc577795b172010dfc2b8bf8ff..c1a79c100c9a71083a58401081fb2929420ce361 100644 (file)
--- a/mailmap.c
+++ b/mailmap.c
@@ -103,10 +103,8 @@ static void add_mapping(struct string_list *map,
        } else {
                struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
                debug_mm("mailmap: adding (complex) entry for '%s'\n", old_email);
-               if (new_name)
-                       mi->name = xstrdup(new_name);
-               if (new_email)
-                       mi->email = xstrdup(new_email);
+               mi->name = xstrdup_or_null(new_name);
+               mi->email = xstrdup_or_null(new_email);
                string_list_insert(&me->namemap, old_name)->util = mi;
        }