remove extra space which confuses some servers (at least wu-ftpd 2.6.2) from interpreting the PORT command correctly
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@47969 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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