#1068 fixed wrong fix (Illegal uses of conditional components in Fluid.Vessels):
The previous fix introduced an error, since the array portsData had no defined
dimension if use_portsData = false. This has been fixed.


git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6270 7ce873d0-865f-4ce7-a662-4bb36ea78beb