Fixed build issue with new tixi 2.2.1
Fixed build issue with new tixi 2.2.1

codingpoets/tigl,DLR-SC/tigl,codingpoets/tigl,DLR-SC/tigl,DLR-SC/tigl,codingpoets/tigl,DLR-SC/tigl,codingpoets/tigl,DLR-SC/tigl,DLR-SC/tigl,codingpoets/tigl,codingpoets/tigl