build fails with vs 19

[tangorn]

1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1583,1): error C2678: binary '==': no operator found which takes a left-hand operand of type 'const _Ty' (or there is no acceptable conversion)
1>        with
1>        [
1>            _Ty=ScaleformVR::ScaleformCallback
1>        ]
1>F:\Projects\SkyrimVRTools\src\ScaleformVR.cpp(44,8): message : could be 'bool ScaleformVR::ScaleformCallback::operator ==(const ScaleformVR::ScaleformCallback &)'
1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1583,1): message : while trying to match the argument list '(const _Ty, const _Ty)'
1>        with
1>        [
1>            _Ty=ScaleformVR::ScaleformCallback
1>        ]
1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1582): message : while compiling class template member function 'auto std::list<ScaleformVR::ScaleformCallback,std::allocator<ScaleformVR::ScaleformCallback>>::remove(const _Ty &)'
1>        with
1>        [
1>            _Ty=ScaleformVR::ScaleformCallback
1>        ]
1>F:\Projects\SkyrimVRTools\src\ScaleformVR.cpp(51): message : see reference to class template instantiation 'std::list<ScaleformVR::ScaleformCallback,std::allocator<ScaleformVR::ScaleformCallback>>' being compiled
1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1594,1): error C2451: conditional expression of type 'void' is illegal
1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1594,22): message : Expressions of type void cannot be converted to other types
1>F:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include\list(1583): message : see reference to function template instantiation 'auto std::list<ScaleformVR::ScaleformCallback,std::allocator<ScaleformVR::ScaleformCallback>>::remove_if<std::list<ScaleformVR::ScaleformCallback,std::allocator<ScaleformVR::ScaleformCallback>>::remove::<lambda_bdae7e4de864a523027aa8840fb19c55>>(_Pr1)' being compiled
1>        with
1>        [
1>            _Pr1=std::list<ScaleformVR::ScaleformCallback,std::allocator<ScaleformVR::ScaleformCallback>>::remove::<lambda_bdae7e4de864a523027aa8840fb19c55>
1>        ]
1>Done building project "SkyrimVRTools.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 4 up-to-date, 0 skipped ==========

[tangorn]

BTW submodule link to SKSEVR mirror is broken, i used the link in your example project to work around it