diff -up ./info/echo-area.c.orig ./info/echo-area.c
--- ./info/echo-area.c.orig	2018-07-26 09:07:51.174145974 +0200
+++ ./info/echo-area.c	2018-07-26 09:09:40.800650603 +0200
@@ -979,6 +979,7 @@ info_read_completing_internal (const cha
                 inform_in_echo_area (_("No completions"));
               else
                 inform_in_echo_area (_("Not complete"));
+              free (line);
               continue;
             }
         }