add InMempool() function

Author: jonasschnelli

src/wallet/wallet.cpp

@@ -1442,6 +1442,15 @@ CAmount CWalletTx::GetChange() const
     return nChangeCached;
 }
 
+bool CWalletTx::InMempool() const
+{
+    LOCK(mempool.cs);
+    if (mempool.exists(GetHash())) {
+        return true;
+    }
+    return false;
+}
+
 bool CWalletTx::IsTrusted() const
 {
     // Quick answer in most cases
@@ -1456,12 +1465,8 @@ bool CWalletTx::IsTrusted() const
         return false;
 
     // Don't trust unconfirmed transactions from us unless they are in the mempool.
-    {
-        LOCK(mempool.cs);
-        if (!mempool.exists(GetHash())) {
-            return false;
-        }
-    }
+    if (!InMempool())
+        return false;
 
     // Trusted if all inputs are from us and are in the mempool:
     BOOST_FOREACH(const CTxIn& txin, vin)

src/wallet/wallet.h

@@ -393,6 +393,7 @@ class CWalletTx : public CMerkleTx
     // True if only scriptSigs are different
     bool IsEquivalentTo(const CWalletTx& tx) const;
 
+    bool InMempool() const;
     bool IsTrusted() const;
 
     bool WriteToDisk(CWalletDB *pwalletdb);