Fixed a reference to uninitialized memory
Fixed a reference to uninitialized memory

This was only found with _GLIBCXX_DEBUG=1 *and* coverage analysis
(-fprofile-arcs -ftest-coverage).

paulbdavis/ledger,jwakely/ledger,afh/ledger,afh/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,jwakely/ledger,paulbdavis/ledger,afh/ledger,afh/ledger,jwakely/ledger,duncanmortimer/ledger,jwakely/ledger,jwakely/ledger,duncanmortimer/ledger,ledger/ledger,ledger/ledger,afh/ledger,ledger/ledger,jwakely/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,ledger/ledger,paulbdavis/ledger,jwakely/ledger,duncanmortimer/ledger,duncanmortimer/ledger,duncanmortimer/ledger,ledger/ledger