Merge tag 'pull_error_handle_fix_use_after_free.v1' of https://github.com/stefanberger/qemu-tpm into staging

Fix use-after-free in util/error.c

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* tag 'pull_error_handle_fix_use_after_free.v1' of https://github.com/stefanberger/qemu-tpm:
  util/error: Fix use-after-free errors reported by Coverity

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