[WriteLog] Rttyrite callsign DDE issue

[Mike McCarthy, W1NR]

I have noticed that 10.72e doesn't copy complete call signs from the
Rttyrite window to the log entry when clicked on. Even though the entire
call sign is highlighted, it almost never copies the entire prefix to
the entry field. This happens mostly with prefixes that have 2 letters
in the prefix. For example, KG0ZZ is highlighted but G0ZZ gets entered.

Mike, W1NR