everybody loves a refactor

internal/handlers/admin_preview_role.go

@@ -31,12 +31,12 @@ func AdminPreviewRoleStart(s *hws.Server, conn *db.DB, ssl bool) http.Handler {
 			var err error
 			role, err = db.GetRoleByID(ctx, tx, roleID)
 			if err != nil {
+				if db.IsBadRequest(err) {
+					throw.NotFound(s, w, r, "Role not found")
+					return false, nil
+				}
 				return false, errors.Wrap(err, "db.GetRoleByID")
 			}
-			if role == nil {
-				throw.NotFound(s, w, r, "Role not found")
-				return false, nil
-			}
 			// Cannot preview admin role
 			if role.Name == roles.Admin {
 				throw.BadRequest(s, w, r, "Cannot preview admin role", nil)