Move target user resolving code into `report` method

app/controllers/ajax/report_controller.rb

@@ -36,13 +36,7 @@ class Ajax::ReportController < AjaxController
       return
     end
 
-    target_user = if object.class.to_s == "User"
-                    object
-                  elsif object.respond_to? :user
-                    object.user
-                  end
-
-    current_user.report object, target_user, params[:reason]
+    current_user.report object, params[:reason]
 
     @response[:status] = :okay
     @response[:message] = t(".success", parameter: params[:type].titleize)

app/models/user.rb

@@ -148,7 +148,13 @@ class User < ApplicationRecord
   def admin? = has_cached_role?(:administrator)
 
   # region stuff used for reporting/moderation
-  def report(object, target_user = nil, reason = nil)
+  def report(object, reason = nil)
+    target_user = if object.class.to_s == "User"
+                    object
+                  elsif object.respond_to? :user
+                    object.user
+                  end
+
     existing = Report.find_by(type: "Reports::#{object.class}", target_id: object.id, user_id: id, target_user_id: target_user&.id, deleted: false)
     if existing.nil?
       Report.create(type: "Reports::#{object.class}", target_id: object.id, user_id: id, target_user_id: target_user&.id, reason:)