Replace list.List with slices (#16311)

* Replaced list with slice.

* Fixed usage of pointer to temporary variable.

* Replaced LIFO list with slice.

* Lint

* Removed type check.

* Removed duplicated code.

* Lint

* Fixed merge.

Co-authored-by: 6543 <6543@obermui.de>

models/user.go

@@ -6,7 +6,6 @@
 package models
 
 import (
-	"container/list"
 	"context"
 	"crypto/sha256"
 	"crypto/subtle"
@@ -1509,16 +1508,13 @@ func ValidateCommitWithEmail(c *git.Commit) *User {
 }
 
 // ValidateCommitsWithEmails checks if authors' e-mails of commits are corresponding to users.
-func ValidateCommitsWithEmails(oldCommits *list.List) *list.List {
+func ValidateCommitsWithEmails(oldCommits []*git.Commit) []*UserCommit {
 	var (
-		u          *User
-		emails     = map[string]*User{}
-		newCommits = list.New()
-		e          = oldCommits.Front()
+		emails     = make(map[string]*User)
+		newCommits = make([]*UserCommit, 0, len(oldCommits))
 	)
-	for e != nil {
-		c := e.Value.(*git.Commit)
-
+	for _, c := range oldCommits {
+		var u *User
 		if c.Author != nil {
 			if v, ok := emails[c.Author.Email]; !ok {
 				u, _ = GetUserByEmail(c.Author.Email)
@@ -1526,15 +1522,12 @@ func ValidateCommitsWithEmails(oldCommits *list.List) *list.List {
 			} else {
 				u = v
 			}
-		} else {
-			u = nil
 		}
 
-		newCommits.PushBack(UserCommit{
+		newCommits = append(newCommits, &UserCommit{
 			User:   u,
 			Commit: c,
 		})
-		e = e.Next()
 	}
 	return newCommits
 }