[MAINT] Fix some issues found by coverity scan

mne-tools / mne-cpp

MNE-CPP: A Framework for Electrophysiology

https://mne-cpp.org/

BSD 3-Clause "New" or "Revised" License

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Closed gabrielbmotta closed 1 year ago

gabrielbmotta commented 1 year ago

iterate over references or const references when possible in range based or loops.
remove memory leak in test
remove potential UB uses of std::move.
explicitly call default constructor of previously uninitialized members in default FiffChInfo constructor.