build: Fix add macOS source work-around for Go bug. (#2138)
build: Fix add macOS source work-around for Go bug. (#2138)

Upstream bug https://github.com/golang/go/issues/19734

Fixes #2137
balamurugana/mc,krisis/mc,CarterMcClellan/mc,CarterMcClellan/mc,abperiasamy/mc,minio/mc,minio/mc,abperiasamy/mc,krisis/mc,vadmeste/mc,balamurugana/mc,vadmeste/mc