[PATCH 5/6] Use bool for agent_expr::tracing

[Tom Tromey]

>>>>> "John" == John Baldwin <jhb@FreeBSD.org> writes:

John> On 6/19/23 2:06 PM, Tom Tromey wrote:
>> This changese agent_expr::tracing to have type bool, allowing inline
>> initialization and cleaning up the code a little.q
>> ---

John> Nit: stray 'q' at the end of the log

Thanks, I fixed this.

Tom