From 782c376c8b46d58ab12898c6389e75f77abe0fb5 Mon Sep 17 00:00:00 2001
From: Giteabot <teabot@gitea.io>
Date: Mon, 20 Mar 2023 21:39:40 -0400
Subject: [PATCH] fix submodule is nil panic (#23588) (#23601)
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Backport #23588 by @viletyy

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

Co-authored-by: 来自村里的小螃蟹 <yystopf@163.com>
---
 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 31827e8846..6f6dc91d85 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() {