don't deal with `nil` values

We can know whether or not there is a content type object, and just exit
early.  There is no need to `try` so hard.

1 files changed, 3 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/metal/params_wrapper.rb b/actionpack/lib/action_controller/metal/params_wrapper.rb
index e680432127..c38fc40b81 100644
--- a/actionpack/lib/action_controller/metal/params_wrapper.rb
+++ b/actionpack/lib/action_controller/metal/params_wrapper.rb
@@ -276,7 +276,9 @@ module ActionController
 
       # Checks if we should perform parameters wrapping.
       def _wrapper_enabled?
-        ref = request.content_mime_type.try(:ref)
+        return false unless request.has_content_type?
+
+        ref = request.content_mime_type.ref
         _wrapper_formats.include?(ref) && _wrapper_key && !request.request_parameters[_wrapper_key]
       end
   end