Merge #9539: [net] Avoid initialization to a value that is never read

Summary:
5844609 [net] Avoid initialization to a value that is never read (practicalswift)

Tree-SHA512: 068c3fba58034187f546688bc9b8b7317e0657e797850613fb6289a4efc28637e4d06a0fa5e57480538c6b8340ed6d6a6c6f9a96f130b698d5d60975490a03d8

Backport Core PR 9539
https://github.com/bitcoin/bitcoin/pull/9539/files

Test Plan: make check

Reviewers: deadalnix, Fabien, #bitcoin_abc, markblundeberg

Reviewed By: #bitcoin_abc, markblundeberg

Subscribers: markblundeberg

Differential Revision: https://reviews.bitcoinabc.org/D2971