Tweak to fix compiling for gcc11 and -std=c++20
Error looked like:
Common/Core/vtkSMPTools.h:106:47: error: expected unqualified-id before ‘const’
106 | vtkSMPTools_FunctorInternal<Functor, false>(const vtkSMPTools_FunctorInternal<Functor, false>&);
| ^~~~~
Common/Core/vtkSMPTools.h:106:47: error: expected ‘)’ before ‘const’
106 | vtkSMPTools_FunctorInternal<Functor, false>(const vtkSMPTools_FunctorInternal<Functor, false>&);
| ~^~~~~
| )
Common/Core/vtkSMPTools.h:137:46: error: expected unqualified-id before ‘const’
137 | vtkSMPTools_FunctorInternal<Functor, true>(const vtkSMPTools_FunctorInternal<Functor, true>&);
| ^~~~~
Common/Core/vtkSMPTools.h:137:46: error: expected ‘)’ before ‘const’
137 | vtkSMPTools_FunctorInternal<Functor, true>(const vtkSMPTools_FunctorInternal<Functor, true>&);
| ~^~~~~
| )
Edited by Paul Harris