Merge branch '2244-nta-related-crash-after-reconfiguring-views-v9_11' into 'v9_11'

Resolve "NTA-related crash after reconfiguring views"

See merge request isc-projects/bind9!4353

CHANGES

@@ -1,3 +1,7 @@
+5527.	[bug]		There was a NULL pointer dereference if the creation
+			of the fetch to determine if a negative trust anchor
+			was still valid failed. [GL #2244]
+
 5523.	[bug]		The initial lookup of a zone transitioning to/from
 			the signed state could fail if the DNSKEY RRset was
 			not found.  Subsequent lookups would succeed.

lib/dns/nta.c

@@ -283,8 +283,8 @@ checkbogus(isc_task_t *task, isc_event_t *event) {
 					  &nta->sigrdataset,
 					  &nta->fetch);
 	if (result != ISC_R_SUCCESS) {
-		dns_view_weakdetach(&view);
 		nta_detach(view->mctx, &nta);
+		dns_view_weakdetach(&view);
 	}
 }