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由 Markus Armbruster 提交于
bdrv_create() sets an error and returns -errno on failure. When the latter is interesting, the error is created with error_setg_errno(). bdrv_append_temp_snapshot() uses the error's message to create a new one with error_setg_errno(). This adds a strerror() that is either uninteresting or duplicate. Use error_setg() instead. Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-7-git-send-email-armbru@redhat.com>
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