Migrate to idiomatic error handling app/a*.go and app/b*.go (#9455)

app/audit.go

@@ -8,17 +8,17 @@ import (
 )
 
 func (a *App) GetAudits(userId string, limit int) (model.Audits, *model.AppError) {
-	if result := <-a.Srv.Store.Audit().Get(userId, 0, limit); result.Err != nil {
+	result := <-a.Srv.Store.Audit().Get(userId, 0, limit)
+	if result.Err != nil {
 		return nil, result.Err
-	} else {
-		return result.Data.(model.Audits), nil
 	}
+	return result.Data.(model.Audits), nil
 }
 
 func (a *App) GetAuditsPage(userId string, page int, perPage int) (model.Audits, *model.AppError) {
-	if result := <-a.Srv.Store.Audit().Get(userId, page*perPage, perPage); result.Err != nil {
+	result := <-a.Srv.Store.Audit().Get(userId, page*perPage, perPage)
+	if result.Err != nil {
 		return nil, result.Err
-	} else {
-		return result.Data.(model.Audits), nil
 	}
+	return result.Data.(model.Audits), nil
 }