lib/transaction_dictionary.c: fix rootdir free size on 32bit systems.
lib/transaction_dictionary.c: fix rootdir free size on 32bit systems.

datenwolf/xbps,ebfe/xbps,datenwolf/xbps,stpx/xbps,ebfe/xbps,datenwolf/xbps,ebfe/xbps,stpx/xbps,stpx/xbps