Properly parenthasize calls to defined?(Rails) in 75fa8241 [#1563 state:resolved]

Signed-off-by: NJoshua Peek <josh@joshpeek.com>

actionpack/lib/action_controller/failsafe.rb

@@ -42,7 +42,7 @@ def log_failsafe_exception(exception)
       end
 
       def failsafe_logger
-        if defined? Rails && Rails.logger
+        if defined?(Rails) && Rails.logger
           Rails.logger
         else
           Logger.new($stderr)

activesupport/lib/active_support/dependencies.rb

@@ -559,7 +559,7 @@ class LoadingModule #:nodoc:
       # Old style environment.rb referenced this method directly.  Please note, it doesn't
       # actually *do* anything any more.
       def self.root(*args)
-        if defined? Rails && Rails.logger
+        if defined?(Rails) && Rails.logger
           Rails.logger.warn "Your environment.rb uses the old syntax, it may not continue to work in future releases."
           Rails.logger.warn "For upgrade instructions please see: http://manuals.rubyonrails.com/read/book/19"
         end

activesupport/lib/active_support/deprecation.rb

@@ -13,7 +13,7 @@ module Deprecation #:nodoc:
                          $stderr.puts callstack.join("\n  ") if debug
                        },
       'development' => Proc.new { |message, callstack|
-                         logger = defined? Rails ? Rails.logger : Logger.new($stderr)
+                         logger = defined?(Rails) ? Rails.logger : Logger.new($stderr)
                          logger.warn message
                          logger.debug callstack.join("\n  ") if debug
                        }