Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 37802)
+++ wp-admin/includes/template.php	(working copy)
@@ -1025,7 +1025,7 @@
 						continue;
 					$i++;
 					$hidden_class = in_array($box['id'], $hidden) ? ' hide-if-js' : '';
-					echo '<div id="' . $box['id'] . '" class="postbox ' . postbox_classes($box['id'], $page) . $hidden_class . '" ' . '>' . "\n";
+					echo '<div id="' . $box['id'] . '" class="postbox ' . postbox_classes($box['id'], $page) . $hidden_class . '" ' . '>' . PHP_EOL;
 					if ( 'dashboard_browser_nag' != $box['id'] ) {
 						echo '<button type="button" class="handlediv button-link" aria-expanded="true">';
 						echo '<span class="screen-reader-text">' . sprintf( __( 'Toggle panel: %s' ), $box['title'] ) . '</span>';
@@ -1032,11 +1032,11 @@
 						echo '<span class="toggle-indicator" aria-hidden="true"></span>';
 						echo '</button>';
 					}
-					echo "<h2 class='hndle'><span>{$box['title']}</span></h2>\n";
-					echo '<div class="inside">' . "\n";
+					echo '<h2 class="hndle"><span>'.$box['title'].'</span></h2>' . PHP_EOL;
+					echo '<div class="inside">' . PHP_EOL;
 					call_user_func($box['callback'], $object, $box);
-					echo "</div>\n";
-					echo "</div>\n";
+                    echo '</div>' . PHP_EOL;
+					echo '</div>' . PHP_EOL;
 				}
 			}
 		}