Made &:method of each explicit as enum in mruby

call method seems to be missing on object. This solves test error.

Author: randym

mrblib/avl_tree.rb

@@ -159,7 +159,7 @@ def dynamic_usurper_search(direction = :left)
       end
       usurper = path.pop
       path.last.send((opposite_direction.to_s + '=').to_sym, Node::TERMINAL)
-      path.reverse.each(&:balance_tree)
+      path.reverse.each {|node| node.balance_tree }
       usurper
     end
 

test/test_avl_tree.rb

@@ -180,7 +180,7 @@
     tree.insert item, nil
   end
   tree.delete 8
-  7 == tree.right
+  7 == tree.right.key
 end
 
 assert('AvlTree delete not found') do