Don't resend wallet txs that aren't in our own mempool

src/wallet/wallet.cpp

@@ -1731,7 +1731,7 @@ bool CWalletTx::RelayWalletTransaction()
     assert(pwallet->GetBroadcastTransactions());
     if (!IsCoinBase() && !IsCoinStake())
     {
-        if (GetDepthInMainChain() == 0 && !isAbandoned()) {
+        if (GetDepthInMainChain() == 0 && !isAbandoned() && InMempool()) {
             LogPrintf("Relaying wtx %s\n", GetHash().ToString());
             RelayTransaction((CTransaction)*this);
             return true;