Some precaution to avoid overwriting of existing data with blanks

include/items.php

@@ -2076,7 +2076,7 @@ function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 		$final_dfrn_id = substr($final_dfrn_id,2);
 
 	if($final_dfrn_id != $orig_id) {
-		logger('dfrn_deliver: wrong dfrn_id. Original: '.$orig_id.' Target: '.$final_dfrn_id.' Test: '.$test);
+		logger('dfrn_deliver: wrong dfrn_id.');
 		// did not decode properly - cannot trust this site
 		return 3;
 	}