Constrain constant values to a single location in code

src/policy/policy.cpp

@@ -50,7 +50,7 @@ bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType)
         if (m < 1 || m > n)
             return false;
     } else if (whichType == TX_NULL_DATA &&
-               (!GetBoolArg("-datacarrier", true) || scriptPubKey.size() > nMaxDatacarrierBytes))
+               (!fAcceptDatacarrier || scriptPubKey.size() > nMaxDatacarrierBytes))
           return false;
 
     return whichType != TX_NONSTANDARD;