Issue #1579254 by Steven Jones: Charts implements hook_requirements incorrectly.

charts.install

@@ -18,6 +18,7 @@ function charts_uninstall() {
  * Implementation of hook_requirements().
  */
 function charts_requirements($phase) {
+  $requirements = array();
   // Test PHP version
   if (version_compare(phpversion(), CHARTS_MINIMUM_PHP) < 0) {
     $requirements['charts_php']['title']        = t('PHP Charts');
@@ -40,7 +41,5 @@ function charts_requirements($phase) {
     $requirements['charts']['description']  = t('Charts core module needs to get some default options in order to operate. You must go to <a href="!link">settings page</a> and configure it.', array('!link' => url('admin/config/content/charts')));
   }
 
-  if (isset($requirements)) {
-    return $requirements;
-  }
+  return $requirements;
 }