Fix bug in regular key set transactions.

src/cpp/ripple/RegularKeySetTransactor.cpp

@@ -3,7 +3,8 @@ SETUP_LOG (RegularKeySetTransactor)
 
 uint64 RegularKeySetTransactor::calculateBaseFee ()
 {
-    if ( ! (mTxnAccount->getFlags () & lsfPasswordSpent)
+    if ( mTxnAccount
+            && (! (mTxnAccount->getFlags () & lsfPasswordSpent))
             && (mSigningPubKey.getAccountID () == mTxnAccountID))
     {
         // flag is armed and they signed with the right account

src/cpp/ripple/Transactor.cpp

@@ -200,11 +200,10 @@ TER Transactor::apply ()
 
     if (terResult != tesSUCCESS) return (terResult);
 
-    calculateFee ();
-
     boost::recursive_mutex::scoped_lock sl (mEngine->getLedger ()->mLock);
 
     mTxnAccount = mEngine->entryCache (ltACCOUNT_ROOT, Ledger::getAccountRootIndex (mTxnAccountID));
+    calculateFee ();
 
     // Find source account
     // If are only forwarding, due to resource limitations, we might verifying only some transactions, this would be probabilistic.