rubocop: fix various style issues.

config/unicorn/development.rb

@@ -14,7 +14,7 @@ user 'danbooru', 'danbooru'
 # Fill path to your app
 working_directory app_path
 
-# Should be 'production' by default, otherwise use other env 
+# Should be 'production' by default, otherwise use other env
 rails_env = ENV['RAILS_ENV'] || 'production'
 
 # Log everything to one file

config/unicorn/production.rb

@@ -5,7 +5,7 @@ app_path = "/var/www/danbooru2/current"
 worker_processes 20
 
 timeout 180
-#listen "127.0.0.1:9000", :tcp_nopush => true
+# listen "127.0.0.1:9000", :tcp_nopush => true
 listen "/tmp/.unicorn.sock", :backlog => 512
 
 # Spawn unicorn master worker for user apps (group: apps)
@@ -41,7 +41,7 @@ run_once = true
 before_fork do |server, worker|
   # the following is highly recomended for Rails + "preload_app true"
   # as there's no need for the master process to hold a connection
-  defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!
+  defined?(ActiveRecord::Base) && ActiveRecord::Base.connection.disconnect!
 
   # Occasionally, it may be necessary to run non-idempotent code in the
   # master before forking.  Keep in mind the above disconnect! example

config/unicorn/staging.rb

@@ -14,7 +14,7 @@ user 'danbooru', 'danbooru'
 # Fill path to your app
 working_directory app_path
 
-# Should be 'production' by default, otherwise use other env 
+# Should be 'production' by default, otherwise use other env
 rails_env = ENV['RAILS_ENV'] || 'staging'
 
 # Log everything to one file
@@ -26,8 +26,8 @@ pid "#{app_path}/tmp/pids/unicorn.pid"
 
 before_fork do |server, worker|
   old_pid = "#{server.config[:pid]}.oldbin"
-  
-  if File.exists?(old_pid) && server.pid != old_pid
+
+  if File.exist?(old_pid) && server.pid != old_pid
     begin
       Process.kill("QUIT", File.read(old_pid).to_i)
     rescue Errno::ENOENT, Errno::ESRCH
@@ -44,4 +44,4 @@ after_fork do |server, worker|
   if defined?(ActiveRecord::Base)
     ActiveRecord::Base.establish_connection
   end
-end
+end