The conditions listed in this comment have changed several times, and at some point the thing that the "if so" referred to was negated.
The text was OK up to 9.6. It was differently wrong in v10, v11 and master, so fix in all those versions.
e95d550bbb Fix comment on when HOT update is possible.
src/backend/access/heap/heapam.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)