Merge tag 'pull-error-2025-09-30-v2' of https://repo.or.cz/qemu/armbru into staging

Merge tag 'pull-error-2025-09-30-v2' of https://repo.or.cz/qemu/armbru into staging

Error reporting patches for 2025-09-30

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# gpg: Signature made Tue 30 Sep 2025 11:40:20 PM PDT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [unknown]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-error-2025-09-30-v2' of https://repo.or.cz/qemu/armbru:
  error: Kill @error_warn
  ivshmem-flat: Mark an instance of missing error handling FIXME
  ui/dbus: Consistent handling of texture mutex failure
  ui/dbus: Clean up dbus_update_gl_cb() error checking
  ui/pixman: Consistent error handling in qemu_pixman_shareable_free()
  util/oslib-win32: Do not treat null @errp as &error_warn
  ui/spice-core: Clean up error reporting
  net/slirp: Clean up error reporting
  hw/remote/vfio-user: Clean up error reporting
  migration/cpr: Clean up error reporting in cpr_resave_fd()
  hw/cxl: Convert cxl_fmws_link() to Error
  tcg: Fix error reporting on mprotect() failure in tcg_region_init()
  monitor: Clean up HMP gdbserver error reporting

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>