refs.c: make ref_transaction_begin take an err argument

diff --git a/refs.c b/refs.c
index 40f04f4a6f40d2b3ffd4ade344a5cf2c0d45c6ee..9cb79081b5b7edcb0d40cf6f689e6f6d61606f53 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -3397,7 +3397,7 @@ struct ref_transaction {
        size_t nr;
 };
 
-struct ref_transaction *ref_transaction_begin(void)
+struct ref_transaction *ref_transaction_begin(struct strbuf *err)
 {
        return xcalloc(1, sizeof(struct ref_transaction));
 }