missing white space in function arg

src/validation.cpp

@@ -455,7 +455,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
 
     // Reject transactions with witness before segregated witness activates (override with -prematurewitness)
     bool witnessEnabled = IsWitnessEnabled(chainActive.Tip(), chainparams.GetConsensus());
-    if (!GetBoolArg("-prematurewitness",false) && tx.HasWitness() && !witnessEnabled) {
+    if (!GetBoolArg("-prematurewitness", false) && tx.HasWitness() && !witnessEnabled) {
         return state.DoS(0, false, REJECT_NONSTANDARD, "no-witness-yet", true);
     }