Use an accessor fuction to access find->status

find->status is marked as private and access is controlled
by find->lock.

(cherry picked from commit c900300f21)

lib/dns/adb.c

@@ -2324,6 +2324,18 @@ dns_adb_cancelfind(dns_adbfind_t *find) {
 	}
 }
 
+unsigned int
+dns_adb_findstatus(dns_adbfind_t *find) {
+	unsigned int status;
+	REQUIRE(DNS_ADBFIND_VALID(find));
+
+	UNLOCK(&find->lock);
+	status = find->status;
+	UNLOCK(&find->lock);
+
+	return (status);
+}
+
 void
 dns_adb_dump(dns_adb_t *adb, FILE *f) {
 	isc_stdtime_t now = isc_stdtime_now();

lib/dns/include/dns/adb.h

@@ -387,6 +387,16 @@ dns_adbfind_done(dns_adbfind_t find);
  *\li	'find' != NULL and *find be valid dns_adbfind_t pointer.
  */
 
+unsigned int
+dns_adb_findstatus(dns_adbfind_t *);
+/*%<
+ * Returns the status field of the find.
+ *
+ * Requires:
+ *
+ *\li	'find' be a valid dns_adbfind_t pointer.
+ */
+
 void
 dns_adb_destroyfind(dns_adbfind_t **find);
 /*%<

lib/dns/resolver.c

@@ -2910,7 +2910,7 @@ fctx_finddone(void *arg) {
 		 * The fetch is waiting for a name to be found.
 		 */
 		INSIST(!SHUTTINGDOWN(fctx));
-		if (find->status == DNS_ADB_MOREADDRESSES) {
+		if (dns_adb_findstatus(find) == DNS_ADB_MOREADDRESSES) {
 			FCTX_ATTR_CLR(fctx, FCTX_ATTR_ADDRWAIT);
 			want_try = true;
 		} else {