Merge pull request #772 from aycabta/fix-instance_method_list

Fix RDoc::Context#instance_method_list

Author: aycabta

lib/rdoc/context.rb

@@ -1003,8 +1003,8 @@ def instance_methods
   # TODO remove this later
 
   def instance_method_list
-    @instance_methods ||= method_list.reject { |a| a.singleton }
     warn '#instance_method_list is obsoleted, please use #instance_methods'
+    @instance_methods ||= method_list.reject { |a| a.singleton }
   end
 
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