Issue #232: Properly set conditionals for mas when condition.

Author: geerlingguy

main.yml

@@ -20,7 +20,7 @@
       when: configure_dotfiles
       tags: ['dotfiles']
     - role: geerlingguy.mac.mas
-      when: mas_installed_apps or mas_installed_app_ids
+      when: (mas_installed_apps | bool) or (mas_installed_app_ids | bool)
       tags: ['mas']
     - role: geerlingguy.mac.dock
       when: configure_dock