patcht7900: add '--scheduler=launchctl' parameter to fix test

> Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
> ---
>
> Hi Lénaïc,
>
> As I said, I had a test failure from your previous series (Linux Mint)
> which was solved with this patch.
>
> ATB,
> Ramsay Jones
>
>  t/t7900-maintenance.sh | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

> diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
> index 8955aea9c8..36a4218745 100755
> --- a/t/t7900-maintenance.sh
> +++ b/t/t7900-maintenance.sh
> @@ -609,11 +609,11 @@ test_expect_success 'start and stop macOS maintenance' '
>  
>  test_expect_success 'use launchctl list to prevent extra work' '
>  	# ensure we are registered
> -	GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start &&
> +	GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start --scheduler=launchctl &&
>  
>  	# do it again on a fresh args file
>  	rm -f args &&
> -	GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start &&
> +	GIT_TEST_MAINT_SCHEDULER=launchctl:./print-args git maintenance start --scheduler=launchctl &&
>  
>  	ls "$HOME/Library/LaunchAgents" >actual &&
>  	cat >expect <<-\EOF &&

> On 30/08/2021 17:02, Junio C Hamano wrote:
>> Ramsay Jones <ramsay@ramsayjones.plus.com> writes:
>> 
> [snip]
>> 
>> This test comes from outside Lénaïc's series.  I guess I am seeing a
>> botched semantic merge conflict resolution of mine where the two
>> topics met.
>
> Oops! :( My apologies to you both.
>
> My build of 'seen' had two test failures (t5319.19 and this one), and
> I had to be somewhere else in about 30 mins ...
>
> I should know by now not to rush out a patch ... Sorry to have wasted
> your time.