Maps a txid to the fee delta applied to it via PrioritiseTransaction().
Declared in <txmempool.h>
[[guarded_by(0x7fd7537b8f18), guarded_by(0x7fd74eec58a8), guarded_by(0x7fd75e706ef8), guarded_by(0x7fd7598936c8), guarded_by(0x7fd75ce05698), guarded_by(0x7fd759f6eb28), guarded_by(0x7fd75b82ed68), guarded_by(0x7fd73e8acfc8)]]
std::map<Txid, CAmount> mapDeltas;