Merge tag 'edgar/xen-queue-2024-10-21.for-upstream' of https://gitlab.com/edgar.iglesias/qemu into staging

Edgars Xen queue.

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# gpg: Signature made Mon 21 Oct 2024 06:55:34 BST
# gpg:                using RSA key AC44FEDC14F7F1EBEDBF415129C596780F6BCA83
# gpg: Good signature from "Edgar E. Iglesias (Xilinx key) <edgar.iglesias@xilinx.com>" [unknown]
# gpg:                 aka "Edgar E. Iglesias <edgar.iglesias@gmail.com>" [full]
# Primary key fingerprint: AC44 FEDC 14F7 F1EB EDBF  4151 29C5 9678 0F6B CA83

* tag 'edgar/xen-queue-2024-10-21.for-upstream' of https://gitlab.com/edgar.iglesias/qemu:
  hw/xen: Avoid use of uninitialized bufioreq_evtchn

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>