Replacing <?= tag

main/messages/send_message_to_userfriend.inc.php

@@ -60,7 +60,7 @@ if ( isset($_REQUEST['user_friend']) ) {
                 // friend invitation message
                 ?>
                 <div id="display_response_id" style="height:200px;">
-					<?= api_xml_http_response_encode(get_lang('AddPersonalMessage'));  ?> :<br /><br />				
+					<?php echo api_xml_http_response_encode(get_lang('AddPersonalMessage'));  ?> :<br /><br />				
 					<textarea id="txt_area_invite" rows="5" cols="40"></textarea><br /><br />
  					<button class="save" type="button" value="<?php echo api_xml_http_response_encode(get_lang('SocialAddToFriends')); ?>" onclick="action_database_panel('4','<?php echo $userfriend_id;?>')" >
  					<?php echo api_xml_http_response_encode(get_lang('SendInvitation')) ?></button>