Fix missing return value checks in `ecx_setupnic()` for linux#837

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hmfhmf wants to merge 2 commits intoOpenEtherCATsociety:masterfrom hmfhmf:fix/setupnic

+10-7

Commits on Jul 16, 2024

Fix return value check when setting up NIC
hmfhmf
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Commits on Jul 17, 2024

Check that socket was successfully created
hmfhmf
committed