Small mistake in Michael-Harris lock-free list

[oerdnj]

Hi, thanks for all the great code and the blog. While implementing the Michal-Harris list in C, I found a small mistake you have here:

OneFile/datastructures/linkedlists/MagedHarrisLinkedListSetHP.hpp

Line 230 in 4965489

next = curr->next.load();

The next = curr->next.load(); needs to be next = getUnmarked(curr)->next.load(); as it could be marked (leading to unaligned/invalid access to memory).

(Found the typo causing the double-frees.)