Adapt to ROOT 6.16 signature of R__zipMultipleAlgorithm
Fixes compilation error in lcg-dev3 slot.
The change is backward compatible.
See https://github.com/root-project/root/pull/3005 (master) and https://github.com/root-project/root/pull/3093 (v6-16-00-patches)
Edited by Marco Cattaneo