APIv4: NewLocAppError -> NewAppError (#7328)

api4/api.go

@@ -237,9 +237,8 @@ func HandleEtag(etag string, routeName string, w http.ResponseWriter, r *http.Re
 }
 
 func Handle404(w http.ResponseWriter, r *http.Request) {
-	err := model.NewLocAppError("Handle404", "api.context.404.app_error", nil, "")
+	err := model.NewAppError("Handle404", "api.context.404.app_error", nil, "", http.StatusNotFound)
 	err.Translate(utils.T)
-	err.StatusCode = http.StatusNotFound
 
 	l4g.Debug("%v: code=404 ip=%v", r.URL.Path, utils.GetIpAddress(r))