Issue #5474: fix appveyor build failure with cygwin
Issue #5474: fix appveyor build failure with cygwin

romani/checkstyle,checkstyle/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,jonmbake/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,checkstyle/checkstyle,romani/checkstyle,romani/checkstyle,romani/checkstyle,romani/checkstyle,rnveach/checkstyle,romani/checkstyle,rnveach/checkstyle,jonmbake/checkstyle,jonmbake/checkstyle,rnveach/checkstyle,rnveach/checkstyle,checkstyle/checkstyle