tree-diff: remove special-case diff-emitting code for empty-tree cases

diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 702e90db2a82a0eba2ff233b9ec46690da5afc3e..1292cfea11d87e8c98ba64ffae9d6a1aeffaca9f 100644 (file)
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -229,15 +229,15 @@ static void update_refs_stdin(void)
                        die("empty command in input");
                else if (isspace(*cmd.buf))
                        die("whitespace before command: %s", cmd.buf);
-               else if (!prefixcmp(cmd.buf, "update "))
+               else if (starts_with(cmd.buf, "update "))
                        parse_cmd_update(cmd.buf + 7);
-               else if (!prefixcmp(cmd.buf, "create "))
+               else if (starts_with(cmd.buf, "create "))
                        parse_cmd_create(cmd.buf + 7);
-               else if (!prefixcmp(cmd.buf, "delete "))
+               else if (starts_with(cmd.buf, "delete "))
                        parse_cmd_delete(cmd.buf + 7);
-               else if (!prefixcmp(cmd.buf, "verify "))
+               else if (starts_with(cmd.buf, "verify "))
                        parse_cmd_verify(cmd.buf + 7);
-               else if (!prefixcmp(cmd.buf, "option "))
+               else if (starts_with(cmd.buf, "option "))
                        parse_cmd_option(cmd.buf + 7);
                else
                        die("unknown command: %s", cmd.buf);