Do I need to file an amended return? Received corrected W-2 revising the Box 12 "W". Liability does NOT change as Form 8889 line 13 is zero no matter the "W" amount is.

I only contribute to an HSA through my employer plan so form 8889 line 13 is always $0 for me.  I believe per the corrected W-2 I only need to amend if my tax liability increased.  Can anyone confirm?