fix no method error rescue

Author: hendricius

lib/sprockets/rails/helper.rb

@@ -129,7 +129,7 @@ def stylesheet_link_tag(*sources)
         # and replaced by source maps in Sprockets 3.x.
         def request_debug_assets?
           debug_assets || (defined?(controller) && controller && params[:debug_assets])
-        rescue NoMethodError
+        rescue
           return false
         end