Fix bug 850: workaround MSVC 2008 weird compilation bug
Fix bug 850: workaround MSVC 2008 weird compilation bug

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