CLI: don't print "and N more" when the server sends no PTR list

A 0.6.1-rc.2 server sends ptr_other_views without ptr_other_views_list,
so zone show printed only "and 1 more" under "Other views:".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -97,6 +97,11 @@ All notable changes to Jarl are documented here. The format follows
 
 ### Fixed
 
+- `jarl zone show` for a reverse zone printed only "and 1 more" under
+  "Other views:" when the server was older than the CLI (0.6.1-rc.2
+  sends the count but not the addresses). It now prints just the count
+  line then.
+
 - The statistics' "Busiest times" grid drew hours without data taller
   than the others (they picked up the page's padding for empty
   messages).