fix issue 6150

[ghost]

Description

This is a fix for issue 6150: #6150. Tested with the cellular unit test

Pull request type

• Fix

[0xc0170]

@RobMeades Please review

[0xc0170]

@TeemuKultala It would be helpful if you can add more info to the commit message (how is this fixing and what is fixing).

[hasnainvirk]

@RobMeades Here is the fix for #6150 Please reveiw

[RobMeades]

Confirmed that this fixes #6150, meaning that the unit tests mbed-os-features-netsocket-cellular-generic_modem_driver-tests-unit_tests-default now pass for me here on a UBLOX_C030_U201 board.

Many thanks for the swift fix.

[0xc0170]

@TeemuKultala CI will be run as soon as commit msg is updated as requested

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 1218
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6160/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 888
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6160/

[mbed-ci]

Test : SUCCESS

Build number : 1018
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/6160/1018