Fix call to mbedtls_pk_wrap_as_opaque(): use usage variable instead PSA_KEY_USAGE_SIGN_HASH

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 65c7c63..f273f88 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -1747,8 +1747,7 @@
         }
 
         if( ( ret = mbedtls_pk_wrap_as_opaque( &pkey, &key_slot, psa_alg,
-                                               PSA_KEY_USAGE_SIGN_HASH,
-                                               psa_alg2 ) ) != 0 )
+                                               usage, psa_alg2 ) ) != 0 )
         {
             mbedtls_printf( " failed\n  !  "
                             "mbedtls_pk_wrap_as_opaque returned -0x%x\n\n", (unsigned int)  -ret );