Adding thread safe true when using redis gem default connection

Author: Edwin Cruz

lib/resque.rb

@@ -65,7 +65,7 @@ def coder
   # create a new one.
   def redis
     return @redis if @redis
-    self.redis = Redis.respond_to?(:connect) ? Redis.connect : "localhost:6379"
+    self.redis = Redis.respond_to?(:connect) ? Redis.connect(:thread_safe => true) : "localhost:6379"
     self.redis
   end