test_suite_ssl: add missing options cleanup

Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>

tests/suites/test_suite_ssl.function

@@ -4998,6 +4998,8 @@ void handshake_serialization( )
     perform_handshake( &options );
     /* The goto below is used to avoid an "unused label" warning.*/
     goto exit;
+exit:
+    free_handshake_options( &options );
 }
 /* END_CASE */