CVE-2026-52931 batman-adv: tp_meter: avoid use of uninit sender vars

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid use of uninit sender vars batadvtprecvack and batadvtpstop are only valid for tpvars in the BATADVTPSENDER role. When called with a BATADVTPRECEIVER role, it proceeds to read sender-only members that we...