Crash Nevermore #

icon mangler: I figured out where I was crashing. When I was disposing of an icon, I was changing the previous and next elements in the linked list, so that there wouldn't be a break in the chain. However I wasn't checking if the next and previous elements actually existed (the first element has the previousEditor pointer set to null, and the last one has the nextEditor pointer set to null too). A simple check for that fixed everything.

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