fix merge method arguments

Author: dorianmariecom

lib/climate_control.rb

@@ -22,7 +22,7 @@ def modify(environment_overrides = {}, &block)
       block.call
     ensure
       after = ENV
-      merge(ENV, previous:, middle:, after:)
+      merge(ENV, previous: previous, middle: middle, after: after)
     end
   end
 
@@ -38,7 +38,7 @@ def unsafe_modify(environment_overrides = {}, &block)
     block.call
   ensure
     after = ENV
-    merge(ENV, previous:, middle:, after:)
+    merge(ENV, previous: previous, middle: middle, after: after)
   end
 
   def env