SparseSelfAdjointView.h: warning: bitwise comparison always evaluates to false

Hi,

See issue reported here: GCC 10.1.0 emits a "significant" (according to CRAN check results) warning on Eigen sources

RcppEigen/include/Eigen/src/SparseSelfAdjointView.h:456:14: warning: bitwise comparison always evaluates to false [-Wtautological-compare] and same issue at SparseSelfAdjointView.h:489:14

Best, F.