Fix glitch with HelloVerifyRequest
Fix glitch with HelloVerifyRequest

With the close-rebind strategy, sometimes the second ClientHello was lost (if
received before close), and since our client doesn't resend yet, the tests
would fail (no problem with other client that resend). Anyway, it's not really
clean to lose messages.

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