Use hook_page_alter to fix no logo error

uw_virtual_site_homepage.module

@@ -48,11 +48,11 @@ function uw_virtual_site_homepage_page_alter(&$page) {
   $continue = true;
 
   if(isset($page['uw-virtual-site-homepage']['field_uw_faculty_list_logo'][0]['#markup'])) {
-      $site_links = _uw_virtual_site_homepage_get_site_links();
-
+    $site_links = _uw_virtual_site_homepage_get_site_links();
+    if (isset($site_links[$page['uw-virtual-site-homepage']['field_uw_faculty_list_logo'][0]['#markup']])) {
       $site_link = $site_links[$page['uw-virtual-site-homepage']['field_uw_faculty_list_logo'][0]['#markup']];
-
       $page['uw-virtual-site-homepage']['uw_scholar_row']['site_link'] = $site_link;
+    }
   }
 
   // If there are banners, process them.