TypeError: in_array(): Argument #2 ($haystack) must be of type array, string given in in_array() (line 591 of gin_lb/gin_lb.module)

Problem/Motivation

Although marked as fixed in #3230953: TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in in_array() (line 580 of modules/contrib/gin_lb/gin_lb.module) we still experience this 500-error when going to the /revisions tab/URL of a revisionable piece of content (for example an article) using 1.0.0-beta12

Steps to reproduce

Go to the /revisions tab/URL of a revisionable piece of content (for example an article)

Proposed resolution

@ricardofaria post a patch in #3230953-7: TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in in_array() (line 580 of modules/contrib/gin_lb/gin_lb.module) that worked for us. All credits for him/her.