HELP _ WEBSITE WARNING (Headers already sent?)

Warning: Cannot modify header information – headers already sent by (output started at /nfs/c08/h04/mnt/123498/domains/murrayconstructionco.com/html/wp-content/themes/murrayconst/functions.php:132) in /nfs/c08/h04/mnt/123498/domains/murrayconstructionco.com/html/wp-includes/pluggable.php on line 881

Domain: murrayconstructionco.com/about-us/

I have a feeling this is due to me re-routing this parent menu item to the first child.. Here is what I am using for that

/*
Template Name: Redirect To First Child
*/
if (have_posts()) {
  while (have_posts()) {
    the_post();
    $pagekids = get_pages("child_of=".$post->ID."&sort_column=menu_order");
    $secondchild = $pagekids[0];
    wp_redirect(get_permalink($secondchild->ID));
  }
}

Please help.. ??