freerdp: add missing dependency
freerdp: add missing dependency

Does not build otherwise.

Signed-off-by: Rosen Penev <cd9d359349c2d33dfd3bf458517d943871c7c054@gmail.com>

oscarfv/MINGW-packages,oscarfv/MINGW-packages,lhmouse/MINGW-packages,JPeterMugaas/MINGW-packages,fabiangreffrath/MINGW-packages,Alexpux/MINGW-packages,Alexpux/MINGW-packages,oscarfv/MINGW-packages,oroppas/MINGW-packages,JPeterMugaas/MINGW-packages,fabiangreffrath/MINGW-packages,JPeterMugaas/MINGW-packages,fabiangreffrath/MINGW-packages,lhmouse/MINGW-packages,Alexpux/MINGW-packages,oscarfv/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,JPeterMugaas/MINGW-packages,JPeterMugaas/MINGW-packages,Alexpux/MINGW-packages,oroppas/MINGW-packages,fabiangreffrath/MINGW-packages,stahta01/MINGW-packages,lhmouse/MINGW-packages,fabiangreffrath/MINGW-packages,Alexpux/MINGW-packages,stahta01/MINGW-packages,stahta01/MINGW-packages,lhmouse/MINGW-packages,JPeterMugaas/MINGW-packages,stahta01/MINGW-packages,Alexpux/MINGW-packages,oroppas/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,stahta01/MINGW-packages,oscarfv/MINGW-packages,fabiangreffrath/MINGW-packages,oroppas/MINGW-packages,oroppas/MINGW-packages,lhmouse/MINGW-packages