Fix missing label for guard
Fix missing label for guard

Fixes #3294

Signed-off-by: John Durkop <38acf03fd265409f9ecb4322197f2d6b442e03c3@fermatsoftware.com>

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