Fix visitor unit test.
Fix visitor unit test.

pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,toastedcrumpets/eigen,pasuka/eigen,ritsu1228/eigen,Zefz/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,ritsu1228/eigen,TSC21/Eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,ritsu1228/eigen,Zefz/eigen,TSC21/Eigen,toastedcrumpets/eigen,TSC21/Eigen,toastedcrumpets/eigen,TSC21/Eigen,toastedcrumpets/eigen