Hi Mike,
currently rolling out 5.74b2 on my servers. Looking at the two processes that crashed around 1½ hours ago it may take a while to see any effect (and then it's more the lack of an effect anyway if the bug is fixed); those stunnels ran for 5d 17h and 6d 16h respectively.
As I've disabled any automatic restarting of stunnel for the time being so I should see outages in my monitoring. I'll keep you posted!
Regards, benaryorg