CVE-2026-89948 batman-adv: bla: fix freeing of claims on meshif deletion

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: fix freeing of claims on meshif deletion When the mesh interface is getting deleted, then batadvbladelbackboneclaims via batadvblapurgebackbonegw could make sure that all claims gets removed. But this function is...