remove extra destroy-mirror call for :delete_window messages
remove extra destroy-mirror call for :delete_window messages

swflint/McCLIM,slyrus/mcclim,swflint/McCLIM,onixie/mcclim,onixie/mcclim,antifuchs/mcclim,antifuchs/mcclim,onixie/mcclim,slyrus/mcclim,swflint/McCLIM