Migration patches for rc3:

- One more memleak regression fix from Het

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# gpg: Signature made Fri 01 Dec 2023 11:35:57 EST
# gpg:                using EDDSA key B9184DC20CC457DACF7DD1A93B5FCCCDF3ABD706
# gpg:                issuer "peterx@redhat.com"
# gpg: Good signature from "Peter Xu <xzpeter@gmail.com>" [full]
# gpg:                 aka "Peter Xu <peterx@redhat.com>" [full]
# Primary key fingerprint: B918 4DC2 0CC4 57DA CF7D  D1A9 3B5F CCCD F3AB D706

* tag 'migration-20231201-pull-request' of https://github.com/xzpeter/qemu

:
  migration: Plug memory leak with migration URIs

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>