message: Fix: Must check fDebitCached explicitly for 1 to check if cache is valid
  fDebitCached is 2 to signal forced update
diff: @@ -859,7 +859,7 @@ public:
  {
  if (vin.empty())
  return 0;
  - if (fDebitCached)
  + if (fDebitCached == 1)
  return nDebitCached;
  nDebitCached = pwallet->GetDebit(*this);
  fDebitCached = true;
  