Is this leakless?

Hey guys, I'm just experimenting with my first use of HashTables, and would like to know if the spell I created (Felfire Streak) is leakless.

I know the spell is not MUI, but this is not an issue, as the map I intend to use the ability on will only have 1 unit casting it at any one time.
Map Link: https://www.hiveworkshop.com/forums/pastebin_data/tq48cr/_files/HashTablesTest.w3x

EDIT: The purpose of the spell is to fire a projectile in a line, that creates fires as it moves. Any units caught in the fire gain a reducing damage over time, starting at 8 damage per second, and reducing by 0.5 every 0.5 seconds.

I only found one leak. Which is:

• Special Effect - Create a special effect attached to the origin of (Last created unit) using Abilities\Weapons\GreenDragonMissile\GreenDragonMissile.mdl

Never gets removed. It's at the trigger 'Cast'.

The unit that that special effect is attached to dies after 4 seconds though, and gets removed from the game also, so does not the special effect attachment get removed with it?

No it does not if i'm correct, removing it would be better.