Fix compilation of preprocessed header for functors for '2024-patches'

Miroslav Saurrequested to merge
cherry-pick-8a664198 into 2024-patches

Fix compilation of preprocessed header for functors

See merge request !4166 (merged)

(cherry picked from commit 8a664198)

2d521e09 Fix compilation of preprocessed header for functors

Co-authored-by: Miroslav Saur miroslav.saur@cern.ch

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