If more than default error handler is added to a SUNContext, it does not get free'd in SUNContext_Free.

https://github.com/LLNL/sundials/blob/2abd63bd6cbc354fb4861bba8e98d0b95d65e24a/src/sundials/sundials_context.c#L288

https://github.com/LLNL/sundials/blob/2abd63bd6cbc354fb4861bba8e98d0b95d65e24a/src/sundials/sundials_errors.c#L42-L47

Either SUNContext_Free or SUNErrHandler_Destroy should traverse the list of error handlers through sunctx->err_handler->previous to free each.