backported fix for Translate() from the main branch

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@8585 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/textfile.cpp

@@ -118,6 +118,10 @@ wxString wxTextFile::Translate(const wxString& text, wxTextFileType type)
                 if ( chLast == _T('\r') ) {
                     // Mac line termination
                     result += eol;
+
+                    // reset chLast to avoid inserting another eol before the
+                    // next character
+                    chLast = 0;
                 }
 
                 // add to the current line