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Apply suggestions from code review

Code style changes.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>

Co-authored-by: Chris Jones <39c675d576fef24ef393b73aa36291e07731e263@users.noreply.github.com>

Mbed-TLS/mbedtls,NXPmicro/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls