Fix rubocop offenses.

plugin.rb

@@ -87,16 +87,18 @@ SQL
       post.save!
 
       if defined?(UserAction::SOLVED)
-        UserAction.log_action!(action_type: UserAction::SOLVED,
+        UserAction.log_action!(
+          action_type: UserAction::SOLVED,
           user_id: post.user_id,
           acting_user_id: guardian.user.id,
           target_post_id: post.id,
-                              target_topic_id: post.topic_id)
+          target_topic_id: post.topic_id
+        )
       end
 
       unless current_user.id == post.user_id
-
-        Notification.create!(notification_type: Notification.types[:custom],
+        Notification.create!(
+          notification_type: Notification.types[:custom],
           user_id: post.user_id,
           topic_id: post.topic_id,
           post_number: post.post_number,
@@ -108,7 +110,7 @@ SQL
         )
       end
 
-      if (auto_close_hours = SiteSetting.solved_topics_auto_close_hours) > 0 and !topic.closed
+      if (auto_close_hours = SiteSetting.solved_topics_auto_close_hours) > (0) && !topic.closed
         topic.set_or_create_timer(
           TopicTimer.types[:close],
           auto_close_hours,