Skip using the extension for truffleruby as well

Author: k0kubun

lib/erb/util.rb

@@ -3,17 +3,16 @@
 #
 # A subset of ERB::Util. Unlike ERB::Util#html_escape, we expect/hope
 # Rails will not monkey-patch ERB::Escape#html_escape.
-begin
-  require 'erb/escape'
-rescue LoadError # JRuby can't load .so
-end
-unless defined?(ERB::Escape) # JRuby
+case RUBY_ENGINE
+when 'jruby', 'truffleruby'
   module ERB::Escape
     def html_escape(s)
       CGI.escapeHTML(s.to_s)
     end
     module_function :html_escape
   end
+else
+  require 'erb/escape'
 end
 
 #--