libdv: Fix build on iOS/x86-64
libdv: Fix build on iOS/x86-64

superdump/cerbero,GStreamer/cerbero,nzjrs/cerbero,jackjansen/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,ford-prefect/cerbero,ikonst/cerbero,ramaxlo/cerbero,AlertMe/cerbero,OptoFidelity/cerbero,atsushieno/cerbero,lubosz/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,shoreflyer/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,sdroege/cerbero,atsushieno/cerbero,nirbheek/cerbero-old,EricssonResearch/cerbero,nirbheek/cerbero,jackjansen/cerbero,AlertMe/cerbero,GStreamer/cerbero,centricular/cerbero,justinjoy/cerbero,fluendo/cerbero,EricssonResearch/cerbero,justinjoy/cerbero,shoreflyer/cerbero,centricular/cerbero,sdroege/cerbero,flexVDI/cerbero,atsushieno/cerbero,sdroege/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,lubosz/cerbero,brion/cerbero,nzjrs/cerbero,nirbheek/cerbero,EricssonResearch/cerbero,shoreflyer/cerbero,lubosz/cerbero,nirbheek/cerbero-old,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,nirbheek/cerbero,OptoFidelity/cerbero,ikonst/cerbero,ford-prefect/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,flexVDI/cerbero,AlertMe/cerbero,shoreflyer/cerbero,nzjrs/cerbero,superdump/cerbero,GStreamer/cerbero,nzjrs/cerbero,ramaxlo/cerbero,ramaxlo/cerbero,EricssonResearch/cerbero,fluendo/cerbero,centricular/cerbero,ramaxlo/cerbero,fluendo/cerbero,OptoFidelity/cerbero,ikonst/cerbero,justinjoy/cerbero,atsushieno/cerbero,ford-prefect/cerbero,jackjansen/cerbero,ikonst/cerbero,brion/cerbero,justinjoy/cerbero,superdump/cerbero,shoreflyer/cerbero,centricular/cerbero,GStreamer/cerbero,centricular/cerbero,EricssonResearch/cerbero,ramaxlo/cerbero,atsushieno/cerbero,nirbheek/cerbero-old,flexVDI/cerbero,multipath-rtp/cerbero,sdroege/cerbero,flexVDI/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,fluendo/cerbero,nzjrs/cerbero,flexVDI/cerbero,brion/cerbero,nirbheek/cerbero-old,AlertMe/cerbero,multipath-rtp/cerbero,multipath-rtp/cerbero,ikonst/cerbero,brion/cerbero,ford-prefect/cerbero,fluendo/cerbero,sdroege/cerbero,superdump/cerbero,AlertMe/cerbero,OptoFidelity/cerbero,multipath-rtp/cerbero,nirbheek/cerbero,lubosz/cerbero,GStreamer/cerbero,brion/cerbero,jackjansen/cerbero