Index: apachesolr.module
===================================================================
--- apachesolr.module   (revision 19184)
+++ apachesolr.module   (working copy)
@@ -377,7 +377,7 @@
 
   // Flatten $documents
   $tmp = array();
-  apachesolr_flatten_documents_array($documents, &$tmp);
+  apachesolr_flatten_documents_array($documents, $tmp);
   $documents = $tmp;