fix comment about dust logic

Conflicts:
	src/core.h

src/main.cpp

@@ -359,10 +359,10 @@ bool CTxOut::IsDust() const
     // which has units satoshis-per-kilobyte.
     // If you'd pay more than 1/3 in fees
     // to spend something, then we consider it dust.
-    // A typical txout is 33 bytes big, and will
+    // A typical txout is 34 bytes big, and will
     // need a CTxIn of at least 148 bytes to spend,
     // so dust is a txout less than 54 uBTC
-    // (5430 satoshis) with default nMinRelayTxFee
+    // (5460 satoshis) with default nMinRelayTxFee
     return ((nValue*1000)/(3*((int)GetSerializeSize(SER_DISK,0)+148)) < CTransaction::nMinRelayTxFee);
 }