fixed empty data when no sub projects in Kosztorysy

SE/se-lib/Route/UrlAction/ProjektyKosztyWstepnychRobot.php

@@ -1574,9 +1574,7 @@ SQL_FUN;
 		static $_data = null;
 		if (null === $_data) {
 			$idSubProject = $this->getModel($idProject)->getSubProjectIds();
-			if (!empty($idSubProject)) {
-				$idSubProject[] = $idProject;
-			}
+			$idSubProject[] = $idProject;
 			$_data = $this->fetchData($idSubProject, $admin);
 		}
 		//if (!array_key_exists($idProject, $_data)) $_data[$idProject] = $this->fetchData($idProject, $admin);