cerbero: Fix searching of Program Files on 32-bit Windows
cerbero: Fix searching of Program Files on 32-bit Windows

Closes https://gitlab.freedesktop.org/gstreamer/cerbero/issues/85

fluendo/cerbero,GStreamer/cerbero,fluendo/cerbero,fluendo/cerbero,nirbheek/cerbero,fluendo/cerbero,atsushieno/cerbero,nirbheek/cerbero,atsushieno/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,fluendo/cerbero,nirbheek/cerbero,atsushieno/cerbero,atsushieno/cerbero,GStreamer/cerbero,GStreamer/cerbero,atsushieno/cerbero