Merge pull request #78 from k1sul1/patch-7

Wrap in exists check

Author: anttiviljami

classes/class-wplf-polylang.php

@@ -87,7 +87,11 @@ public function save_success_message( $message ) {
     }
 
     public function ajax_object( $array ) {
-      $array['lang'] = pll_current_language();
+      if ( function_exists( 'pll_current_language' ) ) {
+        $array['lang'] = pll_current_language();
+      } else {
+        $array['lang'] = null;
+      }
       return $array;
     }