osx: check before removing the directory
osx: check before removing the directory

atsushieno/cerbero,lubosz/cerbero,nirbheek/cerbero,centricular/cerbero,AlertMe/cerbero,centricular/cerbero,ramaxlo/cerbero,nzjrs/cerbero,ikonst/cerbero,davibe/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,flexVDI/cerbero,ylatuya/cerbero,davibe/cerbero,flexVDI/cerbero,justinjoy/cerbero,cee1/cerbero-mac,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,sdroege/cerbero,ford-prefect/cerbero,brion/cerbero,ford-prefect/cerbero,brion/cerbero,flexVDI/cerbero,BigBrother-International/gst-cerbero,lubosz/cerbero,AlertMe/cerbero,centricular/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,superdump/cerbero,OptoFidelity/cerbero,sdroege/cerbero,atsushieno/cerbero,ikonst/cerbero,superdump/cerbero,OptoFidelity/cerbero,fluendo/cerbero,ramaxlo/cerbero,EricssonResearch/cerbero,jackjansen/cerbero,sdroege/cerbero,atsushieno/cerbero,BigBrother-International/gst-cerbero,AlertMe/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ylatuya/cerbero,GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,ylatuya/cerbero,ylatuya/cerbero,nzjrs/cerbero,shoreflyer/cerbero,shoreflyer/cerbero,atsushieno/cerbero,cee1/cerbero-mac,nirbheek/cerbero-old,nirbheek/cerbero-old,nirbheek/cerbero,jackjansen/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,BigBrother-International/gst-cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,lubosz/cerbero,EricssonResearch/cerbero,cee1/cerbero-mac,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,ford-prefect/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,jackjansen/cerbero,fluendo/cerbero,nzjrs/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,superdump/cerbero,justinjoy/cerbero,davibe/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,AlertMe/cerbero,centricular/cerbero,OptoFidelity/cerbero,ramaxlo/cerbero,justinjoy/cerbero,brion/cerbero,BigBrother-International/gst-cerbero,flexVDI/cerbero,ford-prefect/cerbero,EricssonResearch/cerbero,nzjrs/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,flexVDI/cerbero,OptoFidelity/cerbero,jackjansen/cerbero,lubosz/cerbero,nirbheek/cerbero-old,shoreflyer/cerbero,brion/cerbero,davibe/cerbero,ramaxlo/cerbero,centricular/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,ramaxlo/cerbero,cee1/cerbero-mac,ikonst/cerbero,sdroege/cerbero,brion/cerbero,BigBrother-International/gst-cerbero,sdroege/cerbero,multipath-rtp/cerbero,fluendo/cerbero,ikonst/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,AlertMe/cerbero,multipath-rtp/cerbero,shoreflyer/cerbero,EricssonResearch/cerbero,nirbheek/cerbero-old,nirbheek/cerbero,shoreflyer/cerbero,GStreamer/cerbero,superdump/cerbero,atsushieno/cerbero,justinjoy/cerbero,ikonst/cerbero,GStreamer/cerbero,nzjrs/cerbero,fluendo/cerbero,GStreamer/cerbero,fluendo/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero