btrfs: ref-verify: fix use-after-free after invalid ref action

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AZL-55617 CVE-2024-56581 affecting package kernel for versions less than 5.15.176.3-1

In the Linux kernel, the following vulnerability has been resolved: btrfs: ref-verify: fix use-after-free after invalid ref action At btrfsreftreemod after we successfully inserted the new ref entry local variable 'ref' into the respective block entry's rbtree local variable 'be', if we find an...