Caused by a connect call being called each time a new email is opened while reusing the same window without a disconnect.

Fixed by only calling connect once in the constructor.

Fix:

• https://dev.gnupg.org/rMTP107c872d8e1caa26f3690c7f9074b7a851d78584
• https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gpg4win.git;a=commit;h=f53fafa4df9151364e59e0376c82851dc3fb4e16