- fixed an invalid read - removed a memory leak in tixiGetArray - improved index calculation in tixiGetArrayValue, does not require    a malloc anymore and should be thus much faster on consecutive calls
- fixed an invalid read
- removed a memory leak in tixiGetArray
- improved index calculation in tixiGetArrayValue, does not require 
  a malloc anymore and should be thus much faster on consecutive calls


DLR-SC/tixi,melven/tixi,melven/tixi,melven/tixi,melven/tixi,DLR-SC/tixi,melven/tixi,DLR-SC/tixi,DLR-SC/tixi,DLR-SC/tixi