Explicitly initialize AuxFunBase
This follows up on LHCb!206 (merged), after which in order to generate
the sources for a functor cache, one has to explicitly initialize
AuxFunBase
with std::tie()
for functors that take no arguments
in the constructor.
The change here is the mininum required to build a functor cache
with the hlt2_all_lines
settings of Moore as of now. There are
certainly more issues of this type that need to be fixed.
Related to LHCb!2627 (merged) and Moore!536 (merged)