From e407b9a96ee3ce2a685e89cdb536404ec8ca1cb9 Mon Sep 17 00:00:00 2001
From: vvakame <vvakame+dev@gmail.com>
Date: Fri, 9 Nov 2018 15:35:18 +0900
Subject: [PATCH] fix: Panic occured when exec --next-tag with HEAD with tag

---
 chglog.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chglog.go b/chglog.go
index 1be130f8..d6164e8b 100644
--- a/chglog.go
+++ b/chglog.go
@@ -195,7 +195,7 @@ func (gen *Generator) readVersions(tags []*Tag, first string) ([]*Version, error
 		})
 
 		// Instead of `getTags()`, assign the date to the tag
-		if isNext {
+		if isNext && len(commits) != 0 {
 			tag.Date = commits[0].Author.Date
 		}
 	}