remove optimizations which made sense for older rubies

Since Ruby 2.2, frozen string literals are implied for Hash#[]
lookups.  Constant lookups have inline caching since Ruby 1.9
(from YARV).

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/raindrops/middleware.rb b/lib/raindrops/middleware.rb
index 7c647ec..bf16924 100644
--- a/lib/raindrops/middleware.rb
+++ b/lib/raindrops/middleware.rb
@@ -81,7 +81,6 @@ class Raindrops::Middleware
   end
 
   # :stopdoc:
-  PATH_INFO = "PATH_INFO"
   require "raindrops/middleware/proxy"
   # :startdoc:
 
@@ -111,7 +110,7 @@ class Raindrops::Middleware
 
   # standard Rack endpoint
   def call(env) # :nodoc:
-    env[PATH_INFO] == @path and return stats_response
+    env['PATH_INFO'] == @path and return stats_response
     begin
       @stats.incr_calling