Merge branch 'jk/blame-commit-label' into maint

"git blame HEAD -- missing" failed to correctly say "HEAD" when it
tried to say "No such path 'missing' in HEAD".

* jk/blame-commit-label:
  blame.c: fix garbled error message
  use xstrdup_or_null to replace ternary conditionals
  builtin/commit.c: use xstrdup_or_null instead of envdup
  builtin/apply.c: use xstrdup_or_null instead of null_strdup
  git-compat-util: add xstrdup_or_null helper

1 files changed, 2 insertions, 2 deletions

diff --git a/remote.c b/remote.c
index 5b9c6931c1..7b71ebf4bf 100644
--- a/remote.c
+++ b/remote.c
@@ -975,8 +975,8 @@ struct ref *copy_ref(const struct ref *ref)
 	cpy = xmalloc(sizeof(struct ref) + len + 1);
 	memcpy(cpy, ref, sizeof(struct ref) + len + 1);
 	cpy->next = NULL;
-	cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL;
-	cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : NULL;
+	cpy->symref = xstrdup_or_null(ref->symref);
+	cpy->remote_status = xstrdup_or_null(ref->remote_status);
 	cpy->peer_ref = copy_ref(ref->peer_ref);
 	return cpy;
 }