No need to use inject here.

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

activeresource/lib/active_resource/base.rb

@@ -987,10 +987,7 @@ def initialize(attributes = {})
     #   not_ryan.hash            # => {:not => "an ARes instance"}
     def clone
       # Clone all attributes except the pk and any nested ARes
-      cloned = attributes.reject {|k,v| k == self.class.primary_key || v.is_a?(ActiveResource::Base)}.inject({}) do |attrs, (k, v)|
-        attrs[k] = v.clone
-        attrs
-      end
+      cloned = Hash[attributes.reject {|k,v| k == self.class.primary_key || v.is_a?(ActiveResource::Base)}.map { |k, v| [k, v.clone] }]
       # Form the new resource - bypass initialize of resource with 'new' as that will call 'load' which
       # attempts to convert hashes into member objects and arrays into collections of objects.  We want
       # the raw objects to be cloned so we bypass load by directly setting the attributes hash.