NetBSD master CVS tree commits

[source%NetBSD.ORG@localhost]

christos
Mon Oct 28 19:02:03 EST 1996
Update of /cvsroot/src/usr.bin/mail
In directory netbsd1:/var/slash-tmp/cvs-serv5895

Modified Files:
        popen.c 
Log Message:
Fix PR/2900: Handle case where the signal mask is NULL.