Merge pull request #10318 from vipulnsward/refactor_obvious

refactor initialization of array

activesupport/lib/active_support/callbacks.rb

@@ -340,10 +340,7 @@ def initialize(name, config)
       end
 
       def compile
-        method = []
-        method << "value = nil"
-        method << "halted = false"
-
+        method =  ["value = nil", "halted = false"]
         callbacks = "value = !halted && (!block_given? || yield)"
         reverse_each do |callback|
           callbacks = callback.apply(callbacks)