NOISSUE - Fix closing file in OPC-UA adapter

[testwill]

What type of PR is this?

What does this do?

Which issue(s) does this PR fix/relate to?

• Related Issue #
• Resolves #

Have you included tests for your changes?

Did you document any new/modified feature?

Notes

[dborovcanin]

@testwill Thanks for the contribution. Can you, please, sign off your commits so we can merge them?

[testwill]

ok