This fix was initially only for branch 2.9, and branch master should have
received a new version of jshrink, but I forgot to do it before 2.10 and now
we have a regression in 2.10. This commit will be cherry-picked to 2.10 and
we also have it on master so that we don't have a new regression in 2.11 (in
case jshrink is not properly updated)