Wallet staking maturity - update coin availability

Modified by: wagerr-builder <104495875+wagerr-builder@users.noreply.github.com>

src/wallet/wallet.cpp

@@ -1546,7 +1546,7 @@ CAmount CWalletTx::GetUnlockedCredit(bool fUseCache, const isminefilter& filter)
         return 0;
 
     // Must wait until coinbase is safely deep enough in the chain before valuing it
-    if (IsGenerated() && GetBlocksToMaturity() > 0)
+    if (IsCoinBase() && GetBlocksToMaturity() > 0)
         return 0;
 
     CAmount nCredit = 0;