FIX: Coverity 221593 Unchecked return value

[jobehrens]

221593 Unchecked return value

[codecov]

Codecov Report

Merging #876 (6e1dd8e) into main (bd31738) will increase coverage by 6.85%.
The diff coverage is n/a.

❗ Current head 6e1dd8e differs from pull request most recent head 5a18c80. Consider uploading reports for the commit 5a18c80 to get more accurate results

@@            Coverage Diff             @@
##             main     #876      +/-   ##
==========================================
+ Coverage   30.20%   37.05%   +6.85%     
==========================================
  Files         452      196     -256     
  Lines       39208    11548   -27660     
==========================================
- Hits        11841     4279    -7562     
+ Misses      27367     7269   -20098     

Impacted Files	Coverage Δ
libraries/mne/mne_sourcespace.h	0.00% <0.00%> (-100.00%)	⬇️
libraries/fiff/fiff_coord_trans.h	0.00% <0.00%> (-100.00%)	⬇️
libraries/fiff/fiff_named_matrix.h	0.00% <0.00%> (-100.00%)	⬇️
libraries/connectivity/network/network.h	0.00% <0.00%> (-100.00%)	⬇️
libraries/rtprocessing/helpers/filterkernel.h	0.00% <0.00%> (-100.00%)	⬇️
libraries/mne/mne_cluster_info.h	0.00% <0.00%> (-76.48%)	⬇️
libraries/inverse/hpiFit/hpifit.h	0.00% <0.00%> (-60.00%)	⬇️
libraries/fiff/fiff_stream.h	0.00% <0.00%> (-50.00%)	⬇️
libraries/connectivity/connectivitysettings.h	50.00% <0.00%> (-50.00%)	⬇️
libraries/utils/mnemath.h	0.00% <0.00%> (-16.00%)	⬇️
... and 271 more