FIX: Fix for PR #8238 _prepare_label_extraction (#8239)
FIX: Fix for PR #8238 _prepare_label_extraction (#8239)


olafhauk/mne-python,Teekuningas/mne-python,mne-tools/mne-python,pravsripad/mne-python,drammock/mne-python,bloyl/mne-python,kingjr/mne-python,kambysese/mne-python,kingjr/mne-python,wmvanvliet/mne-python,kingjr/mne-python,Eric89GXL/mne-python,larsoner/mne-python,wmvanvliet/mne-python,pravsripad/mne-python,larsoner/mne-python,mne-tools/mne-python,larsoner/mne-python,Teekuningas/mne-python,Teekuningas/mne-python,rkmaddox/mne-python,rkmaddox/mne-python,olafhauk/mne-python,kambysese/mne-python,olafhauk/mne-python,wmvanvliet/mne-python,bloyl/mne-python,pravsripad/mne-python,Eric89GXL/mne-python,mne-tools/mne-python,drammock/mne-python,drammock/mne-python