CID 488064: Passing null pointer "version" to "maybe_update_recordsandsize", which dereferences it

Coverity Scan claims the following issues:

/lib/dns/qpzone.c: 1994 in add()
1988     			newheader->down = topheader;
1989     			topheader->next = newheader;
1990     			node->dirty = 1;
1991     			if (changed != NULL) {
1992     				changed->dirty = true;
1993     			}
>>>     CID 488064:    (FORWARD_NULL)
>>>     Passing null pointer "version" to "maybe_update_recordsandsize", which dereferences it.
1994     			maybe_update_recordsandsize(false, version, header,
1995     						    nodename->length);
1996     		}
1997     	} else {
1998     		/*
1999     		 * No non-IGNORED rdatasets of the given type exist at
/lib/dns/qpzone.c: 1972 in add()
1966     			if (topheader_prev != NULL) {
1967     				topheader_prev->next = newheader;
1968     			} else {
1969     				node->data = newheader;
1970     			}
1971     			newheader->next = topheader->next;
>>>     CID 488064:    (FORWARD_NULL)
>>>     Passing null pointer "version" to "maybe_update_recordsandsize", which dereferences it.
1972     			maybe_update_recordsandsize(false, version, header,
1973     						    nodename->length);
1974     			dns_slabheader_destroy(&header);
1975     		} else {
1976     			idx = HEADERNODE(newheader)->locknum;
1977     			if (RESIGN(newheader)) {
/lib/dns/qpzone.c: 1979 in add()
1973     						    nodename->length);
1974     			dns_slabheader_destroy(&header);
1975     		} else {
1976     			idx = HEADERNODE(newheader)->locknum;
1977     			if (RESIGN(newheader)) {
1978     				resigninsert(qpdb, idx, newheader);
>>>     CID 488064:    (FORWARD_NULL)
>>>     Passing null pointer "version" to "resigndelete", which dereferences it.
1979     				resigndelete(qpdb, version,
1980     					     header DNS__DB_FLARG_PASS);
1981     			}
1982     			if (topheader_prev != NULL) {
1983     				topheader_prev->next = newheader;
1984     			} else {
/lib/dns/qpzone.c: 2061 in add()
2055     				newheader->next = node->data;
2056     				node->data = newheader;
2057     			}
2058     		}
2059     	}
2060     
>>>     CID 488064:    (FORWARD_NULL)
>>>     Passing null pointer "version" to "maybe_update_recordsandsize", which dereferences it.
2061     	maybe_update_recordsandsize(true, version, newheader, nodename->length);
2062     
2063     	/*
2064     	 * Check if the node now contains CNAME and other data.
2065     	 */
2066     	if (version != NULL && cname_and_other(node, version->serial)) {