Fix double assignment typo in rtVECTOR_Handle::UpdateVectorSetPositionalState
Fix double assignment typo in rtVECTOR_Handle::UpdateVectorSetPositionalState

Newer versions of g++ (at least 6.3 and up) detect the double assignment typo
corrected here.

c-kuhlman/vision,VisionAerie/vision,MichaelJCaruso/vision,vision-dbms/vision,VisionAerie/vision,MichaelJCaruso/vision,vision-dbms/vision,MichaelJCaruso/vision,vision-dbms/vision,VisionAerie/vision,MichaelJCaruso/vision,c-kuhlman/vision,VisionAerie/vision,c-kuhlman/vision,MichaelJCaruso/vision,MichaelJCaruso/vision,c-kuhlman/vision,VisionAerie/vision,c-kuhlman/vision,VisionAerie/vision,vision-dbms/vision,VisionAerie/vision,vision-dbms/vision,vision-dbms/vision