Fix RuboCop Style/RedundantCondition (#41884).

git-svn-id: https://svn.redmine.org/redmine/trunk@23627 e93f8b46-1217-0410-a6f0-8f06a7374b81

.rubocop_todo.yml

@@ -1106,13 +1106,6 @@ Style/RedundantBegin:
     - 'test/unit/project_nested_set_concurrency_test.rb'
     - 'test/unit/query_test.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-Style/RedundantCondition:
-  Exclude:
-    - 'app/controllers/messages_controller.rb'
-    - 'app/controllers/previews_controller.rb'
-    - 'app/models/issue.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 Style/RedundantConditional:
   Exclude:

app/controllers/messages_controller.rb

@@ -134,7 +134,7 @@ class MessagesController < ApplicationController
 
   def preview
     message = @board.messages.find_by_id(params[:id])
-    @text = params[:text] ? params[:text] : nil
+    @text = params[:text] || nil
     @previewed = message
     render :partial => 'common/preview'
   end

app/controllers/previews_controller.rb

@@ -26,7 +26,7 @@ class PreviewsController < ApplicationController
     if @issue
       @previewed = @issue
     end
-    @text = params[:text] ? params[:text] : nil
+    @text = params[:text] || nil
     render :partial => 'common/preview'
   end
 
@@ -34,12 +34,12 @@ class PreviewsController < ApplicationController
     if params[:id].present? && news = News.visible.find_by_id(params[:id])
       @previewed = news
     end
-    @text = params[:text] ? params[:text] : nil
+    @text = params[:text] || nil
     render :partial => 'common/preview'
   end
 
   def text
-    @text = params[:text] ? params[:text] : nil
+    @text = params[:text] || nil
     render :partial => 'common/preview'
   end
 

app/models/issue.rb

@@ -1203,11 +1203,7 @@ class Issue < ApplicationRecord
   end
 
   def last_notes
-    if @last_notes
-      @last_notes
-    else
-      journals.visible.where.not(notes: '').reorder(:id => :desc).first.try(:notes)
-    end
+    @last_notes || journals.visible.where.not(notes: '').reorder(:id => :desc).first.try(:notes)
   end
 
   # Preloads relations for a collection of issues