Improve robustness of gz_open by adding a null check for the 'mode' parameter #1079
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Thank you for your excellent work on this library.
This PR proposes a change to improve the robustness of the
gz_open
function by adding aNULL
check for the mode parameter.This ensures its argument validation is consistent with the existing check for the
path
parameter. More importantly, it prevents a potential segmentation fault if the function is called with a NULL mode, making it safer and more predictable for users.I hope you find this a welcome improvement. Thank you for your time and for considering this contribution.