[ic] loop-last confusion

[Grant]

Could someone please explain to me why this stops after 9 iterations (as it
should):

[loop search="ml=100000/ra=yes"]
	[loop-code]
	[loop-last][if type="explicit" compare="[loop-increment] ==
9"]1[/if][/loop-last]
[/loop]

and this does not:

[tmp listing_counter]0[/tmp]
[loop search="ml=100000/ra=yes"]
	[tmp listing_counter][calc] [scratch listing_counter] + 1 [/calc][/tmp]
	[loop-code]
	[loop-last][if type="explicit" compare="[scratch listing_counter] ==
9"]1[/if][/loop-last]
[/loop]

- Grant