udp: Update reuse->hasconns under reuseportlock.
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.6 by commit 1fb3a672317fba2a54f1bc8a6401235c6f11f883, it was introduced in version v5.4 by commit acdcecc61285faed359f1a3568c32089cc3a8329. For more details please see the references link.