diff -up mutt-1.10.1/mbox.c.mutt-1.9.3-1_coverity_120_121 mutt-1.10.1/mbox.c
--- mutt-1.10.1/mbox.c.mutt-1.9.3-1_coverity_120_121	2018-11-26 10:42:53.503200044 +0100
+++ mutt-1.10.1/mbox.c	2018-11-26 10:43:37.491846848 +0100
@@ -1086,6 +1086,8 @@ static int mbox_sync_mailbox (CONTEXT *c
     mutt_unblock_signals ();
     mx_fastclose_mailbox (ctx);
     mutt_pretty_mailbox (savefile, sizeof (savefile));
+    FREE (&newOffset);
+    FREE (&oldOffset);
     mutt_error (_("Write failed!  Saved partial mailbox to %s"), savefile);
     mutt_sleep (5);
     return (-1);
@@ -1100,6 +1102,8 @@ static int mbox_sync_mailbox (CONTEXT *c
     unlink (tempfile);
     mutt_unblock_signals ();
     mx_fastclose_mailbox (ctx);
+    FREE (&newOffset);
+    FREE (&oldOffset);
     mutt_error _("Fatal error!  Could not reopen mailbox!");
     return (-1);
   }