Unbalanced calls to gnutls_global_init() and gnutls_global_deinit() #97
Description
Calls to gnutls_global_init() and gnutls_global_deinit() should be balanced.
After commit 5e08234, these functions were each called exactly once from tlshd_service_socket().
Commit 43a15fe wrongly added calls to gnutls_global_deinit() in the quic_clienthello_handshake() and tlshd_quic_serverhello_handshake() functions.