Make sure new wallet variables are initialized

src/wallet.h

@@ -104,6 +104,8 @@ public:
         nMasterKeyMaxID = 0;
         pwalletdbEncryption = NULL;
         nOrderPosNext = 0;
+        nNextResend = 0;
+        nLastResend = 0;
     }
     CWallet(std::string strWalletFileIn)
     {
@@ -114,6 +116,8 @@ public:
         nMasterKeyMaxID = 0;
         pwalletdbEncryption = NULL;
         nOrderPosNext = 0;
+        nNextResend = 0;
+        nLastResend = 0;
     }
 
     std::map<uint256, CWalletTx> mapWallet;