moved missing_params under private

Author: davezuckerman

app/controllers/fees_controller.rb

@@ -16,10 +16,6 @@ def index
     redirect_to(action: :transaction_error)
   end
 
-  def missing_params(_error)
-    redirect_to 'https://lib.berkeley.edu/find/borrow-renew?section=pay-fees', allow_other_host: true
-  end
-
   def efee
     @jwt = params.require(:jwt)
     secret = EfeesInvoice.secret
@@ -80,6 +76,12 @@ def transaction_complete
     render json: { status: 'silent post received' }
   end
 
+  private 
+
+  def missing_params(_error)
+    redirect_to 'https://lib.berkeley.edu/find/borrow-renew?section=pay-fees', allow_other_host: true
+  end
+
   def authorize!
     return if Rails.env.development?