#550  CVE-2022-23852 -- Fix signed integer overflow
                (undefined behavior) in function XML_GetBuffer
                (that is also called by function XML_Parse internally)
                for when XML_CONTEXT_BYTES is defined to >0 (which is both
                common and default).
                Impact is denial of service or more.
        #551  CVE-2022-23990 -- Fix unsigned integer overflow in function
                doProlog triggered by large content in element type
                declarations when there is an element declaration handler
                present (from a prior call to XML_SetElementDeclHandler).
                Impact is denial of service or more.