Fix removeEmptyPort

[dxasu]

remove hasPort and simplify logic

Fixes #76651

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Message from Ian Lance Taylor:

Patch Set 1:

(1 comment)

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Message from sz dxasu:

Patch Set 2:

(2 comments)

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Message from Damien Neil:

Patch Set 2:

(3 comments)

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Message from Damien Neil:

Patch Set 2:

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Message from sz dxasu:

Patch Set 2:

(2 comments)

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