remove duplicate _count in search links

Author: Grahame Grieve

server/search_base.pas

@@ -256,8 +256,11 @@ function TSearchParser.buildUrl(base : String; search: TFslList<TSearchParameter
     b.append('?');
     for sp in search do
     begin
-      b.Append('&');
-      sp.build(b);
+      if not (sp.control in [scpCount]) then
+      begin
+        b.Append('&');
+        sp.build(b);
+      end;
     end;
     result := b.ToString;
   finally