Only call Object#taint when the taint method exists

lib/yard/cli/stats.rb

@@ -225,7 +225,8 @@ def general_options(opts)
         end
 
         opts.on('--query QUERY', "Only includes objects that match a specific query") do |query|
-          options[:verifier].add_expressions(query.taint)
+          query.taint if query.respond_to?(:taint)
+          options[:verifier].add_expressions(query)
         end
       end
     end

lib/yard/cli/yardoc.rb

@@ -650,7 +650,8 @@ def output_options(opts)
 
         opts.on('--query QUERY', "Only show objects that match a specific query") do |query|
           next if YARD::Config.options[:safe_mode]
-          options.verifier.add_expressions(query.taint)
+          query.taint if query.respond_to?(:taint)
+          options.verifier.add_expressions(query)
         end
 
         opts.on('--title TITLE', 'Add a specific title to HTML documents') do |title|

lib/yard/templates/template.rb

@@ -176,7 +176,9 @@ def include_inherited(full_paths)
         def load_setup_rb
           setup_file = File.join(full_path, 'setup.rb')
           if File.file? setup_file
-            module_eval(File.read(setup_file).taint, setup_file, 1)
+            setup_code = File.read(setup_file)
+            setup_code.taint if setup_code.respond_to?(:taint)
+            module_eval(setup_code, setup_file, 1)
           end
         end
       end