layoutIfNeeded for iOS 9 only

Author: kharrison

TableHeader/TableHeaderObjC/TableHeaderObjC/ListTableViewController.m

@@ -98,7 +98,9 @@ - (void)viewDidLayoutSubviews {
 
             // Now that the table view header is sized correctly have
             // the table view redo its layout so that the cells are
-            // correcly positioned under the new header size.
+            // correcly positioned for the new header size.
+
+            // This only seems to be necessary on iOS 9.
 
             [self.tableView layoutIfNeeded];
         }

TableHeader/TableHeaderSwift/TableHeader/ListTableViewController.swift

@@ -103,6 +103,8 @@ class ListTableViewController: UITableViewController {
             // the table view redo its layout so that the cells are
             // correcly positioned for the new header size.
 
+            // This only seems to be necessary on iOS 9.
+
             tableView.layoutIfNeeded()
         }
     }