Fix nil error in StatusFilter (#7470)

Fix #7462

app/models/concerns/status_threading_concern.rb

@@ -74,16 +74,7 @@ module StatusThreadingConcern
     statuses    = statuses_with_accounts(ids).to_a
     account_ids = statuses.map(&:account_id).uniq
     domains     = statuses.map(&:account_domain).compact.uniq
-
-    relations = if account.present?
-                  {
-                    blocking: Account.blocking_map(account_ids, account.id),
-                    blocked_by: Account.blocked_by_map(account_ids, account.id),
-                    muting: Account.muting_map(account_ids, account.id),
-                    following: Account.following_map(account_ids, account.id),
-                    domain_blocking_by_domain: Account.domain_blocking_map_by_domain(domains, account.id),
-                  }
-                end
+    relations   = relations_map_for_account(account, account_ids, domains)
 
     statuses.reject! { |status| filter_from_context?(status, account, relations) }
 
@@ -91,6 +82,18 @@ module StatusThreadingConcern
     statuses.sort_by! { |status| ids.index(status.id) }
   end
 
+  def relations_map_for_account(account, account_ids, domains)
+    return {} if account.nil?
+
+    {
+      blocking: Account.blocking_map(account_ids, account.id),
+      blocked_by: Account.blocked_by_map(account_ids, account.id),
+      muting: Account.muting_map(account_ids, account.id),
+      following: Account.following_map(account_ids, account.id),
+      domain_blocking_by_domain: Account.domain_blocking_map_by_domain(domains, account.id),
+    }
+  end
+
   def statuses_with_accounts(ids)
     Status.where(id: ids).includes(:account)
   end