Bug#121469: mh: "repl -cc all" hangs

[Grant Grundler <grundler@dhcp66.cup.hp.com>]

More data: it only "hangs" on some mail. Simple, single "To:"
seem to work. Here is the original To/CC list (addresses are
mangled to avoid spam) that would "hang":

| From: "MEYER,ALAN C. (HP-FtCollins,ex1)" <almer@hp.com>
| To: "'gler@cup.hp.com'" <gler@cup.hp.com>,
|         "'aam@fc.hp.com'" <aam@fc.hp.com>,
|         "HELGAAS,BJORN (HP-FtCollins,ex1)" <bjoras@hp.com>,
|         "'wy@ldl.fc.hp.com'" <wy@ldl.fc.hp.com>
| Cc: "'khd@fc.hp.com'" <khd@fc.hp.com>,
|         "'be@hp.com'" <be@hp.com>,
|         "GOBEILLE,BOB (HP-FtCollins,ex1)" <bobe@hp.com>,
|         "KAO,PING-HUI (HP-FtCollins,unix1)" <pingo@hp.com>,
|         "'be@fc.hp.com'" <be@fc.hp.com>

grant

Grant Grundler
+1.408.447.7253