cpu-exec: assert that plugin_mem_cbs is NULL after execution

Fixes: #1381

Signed-off-by: Emilio Cota <cota@braap.org>
Message-Id: <20230108165107.62488-1-cota@braap.org>
[AJB: manually applied follow-up fix]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230124180127.1881110-35-alex.bennee@linaro.org>
2 files changed