`main` executable does not compile with CUDA off

Following merge of !11 (merged), the main executable does not compile.

cmake .. -DCMAKE_BUILD_TYPE_Debug -DCMAKE_USE_CUDA=OFF -DCMAKE_USE_SIMD=ON
make main

/home/tlestang/redesign-prototypes/main.cpp: In function ‘int main(int, char**)’:
/home/tlestang/redesign-prototypes/main.cpp:121:34: error: ‘inCoeff’ was not declared in this scope
  121 |         for (auto const &block : inCoeff.GetBlocks())

Version info:

$ git show HEAD
commit 3bb37410b3c78cf35e00b4234acdbc9ffb0c13d3 (HEAD -> master, origin/master, origin/HEAD)
Merge: e83c7bc 6d65193
Author: Chris Cantwell <c.cantwell@imperial.ac.uk>
Date:   Tue Jul 18 11:00:30 2023 +0000

    Merge branch 'bwd_trans_sum_fac_cuda_kernels' into 'master'
    
    Implement CUDA BwdTrans sum-factorization kernels
    
    See merge request nektar/redesign-prototypes!11