[master] fix compile bug with json but no xml

3604.	[bug]		Fixed a compile-time error when building with
			JSON but not XML. [RT #33959]

CHANGES

+3604.	[bug]		Fixed a compile-time error when building with
+			JSON but not XML. [RT #33959]
+
 3603.	[bug]		Install <isc/stat.h>. [RT #33956]
 
 3602.	[contrib]	Added DLZ Perl module, allowing Perl scripts to

lib/isc/task.c

@@ -89,7 +89,7 @@ typedef enum {
 	task_state_done
 } task_state_t;
 
-#if defined(HAVE_LIBXML2)
+#if defined(HAVE_LIBXML2) || defined(HAVE_JSON)
 static const char *statenames[] = {
 	"idle", "ready", "running", "done",
 };