expire_reflog(): move updateref to flags argument

The policy objects don't care about "--updateref". So move it to
expire_reflog()'s flags parameter.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/reflog.c

@@ -21,14 +21,14 @@ static unsigned long default_reflog_expire;
 static unsigned long default_reflog_expire_unreachable;
 
 enum expire_reflog_flags {
-	EXPIRE_REFLOGS_DRY_RUN = 1 << 0
+	EXPIRE_REFLOGS_DRY_RUN = 1 << 0,
+	EXPIRE_REFLOGS_UPDATE_REF = 1 << 1
 };
 
 struct cmd_reflog_expire_cb {
 	struct rev_info revs;
 	int stalefix;
 	int rewrite;
-	int updateref;
 	int verbose;
 	unsigned long expire_total;
 	unsigned long expire_unreachable;
@@ -474,7 +474,7 @@ static int expire_reflog(const char *refname, const unsigned char *sha1,
 		if (close_lock_file(&reflog_lock)) {
 			status |= error("couldn't write %s: %s", log_file,
 					strerror(errno));
-		} else if (cmd->updateref &&
+		} else if ((flags & EXPIRE_REFLOGS_UPDATE_REF) &&
 			(write_in_full(lock->lock_fd,
 				sha1_to_hex(cb.last_kept_sha1), 40) != 40 ||
 			 write_str_in_full(lock->lock_fd, "\n") != 1 ||
@@ -485,7 +485,7 @@ static int expire_reflog(const char *refname, const unsigned char *sha1,
 		} else if (commit_lock_file(&reflog_lock)) {
 			status |= error("unable to commit reflog '%s' (%s)",
 					log_file, strerror(errno));
-		} else if (cmd->updateref && commit_ref(lock)) {
+		} else if ((flags & EXPIRE_REFLOGS_UPDATE_REF) && commit_ref(lock)) {
 			status |= error("couldn't set %s", lock->ref_name);
 		}
 	}
@@ -677,7 +677,7 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix)
 		else if (!strcmp(arg, "--rewrite"))
 			cb.rewrite = 1;
 		else if (!strcmp(arg, "--updateref"))
-			cb.updateref = 1;
+			flags |= EXPIRE_REFLOGS_UPDATE_REF;
 		else if (!strcmp(arg, "--all"))
 			do_all = 1;
 		else if (!strcmp(arg, "--verbose"))
@@ -759,7 +759,7 @@ static int cmd_reflog_delete(int argc, const char **argv, const char *prefix)
 		else if (!strcmp(arg, "--rewrite"))
 			cb.rewrite = 1;
 		else if (!strcmp(arg, "--updateref"))
-			cb.updateref = 1;
+			flags |= EXPIRE_REFLOGS_UPDATE_REF;
 		else if (!strcmp(arg, "--verbose"))
 			cb.verbose = 1;
 		else if (!strcmp(arg, "--")) {