tgstation/-tg-station — pull request #2787 by Ccomp5950 (2014-02-14 09:40:07+00:00)
Title: Code effeciency:  canister/update_icon

Before: canister/update_icon is called every tick if the canister is hooked up and redraws the icons.

After: canister/update_icon checks to see if it even needs to update it's icon's before doing so.