remove another lolinject

1 files changed, 1 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb
index f32b562368..9eee3fc5e3 100644
--- a/activesupport/lib/active_support/cache/mem_cache_store.rb
+++ b/activesupport/lib/active_support/cache/mem_cache_store.rb
@@ -73,7 +73,7 @@ module ActiveSupport
       def read_multi(*names)
         options = names.extract_options!
         options = merged_options(options)
-        keys_to_names = names.inject({}){|map, name| map[escape_key(namespaced_key(name, options))] = name; map}
+        keys_to_names = Hash[names.map{|name| [escape_key(namespaced_key(name, options)), name]}]
         raw_values = @data.get_multi(keys_to_names.keys, :raw => true)
         values = {}
         raw_values.each do |key, value|