From f83246edb263c039904ee9723f5dfc2a46f2259f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=A5=E8=87=AA=E6=9D=91=E9=87=8C=E7=9A=84=E5=B0=8F?=
 =?UTF-8?q?=E8=9E=83=E8=9F=B9?= <yystopf@163.com>
Date: Tue, 21 Mar 2023 06:26:01 +0800
Subject: [PATCH] fix submodule is nil panic (#23588)

#23587
submodule path is nil
It is panic a nil error

---------

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
---
 services/repository/files/content.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/services/repository/files/content.go b/services/repository/files/content.go
index 31827e8846ed..6f6dc91d859a 100644
--- a/services/repository/files/content.go
+++ b/services/repository/files/content.go
@@ -214,7 +214,9 @@ func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref
 		if err != nil {
 			return nil, err
 		}
-		contentsResponse.SubmoduleGitURL = &submodule.URL
+		if submodule != nil && submodule.URL != "" {
+			contentsResponse.SubmoduleGitURL = &submodule.URL
+		}
 	}
 	// Handle links
 	if entry.IsRegular() || entry.IsLink() {