- snprintf (savefile, sizeof (savefile), "%s/mutt.%s-%s-%d",
- NONULL (Tempdir), NONULL(Username), NONULL(Hostname), getpid ());
+ snprintf (savefile, sizeof (savefile), "%s/mutt.%s-%s-%u",
+ NONULL (Tempdir), NONULL(Username), NONULL(Hostname), (unsigned int)getpid ());