update hdd deposit contract

contracts/hdddeposit/hdddeposit.abi

@@ -24,6 +24,10 @@
                 {
                     "name": "deposit_free",
                     "type": "asset"
+                },
+                {
+                    "name": "deposit_his",
+                    "type": "asset"
                 }                
             ]
         },

contracts/hdddeposit/hdddeposit.cpp

@@ -46,11 +46,13 @@ void hdddeposit::paydeppool(account_name user, asset quant) {
             a.pool_type = 0;
             a.deposit_total = quant;
             a.deposit_free = quant;
+            a.deposit_his = quant;
         });
     } else {
         _deposit.modify( it, 0, [&]( auto& a ) {
             a.deposit_total += quant;
             a.deposit_free += quant;
+            a.deposit_his += quant;
         });
     }
 
@@ -73,10 +75,13 @@ void hdddeposit::unpaydeppool(account_name user, asset quant) {
 
     eosio_assert( it.deposit_free.amount >= quant.amount, "free deposit not enough." );
     eosio_assert( it.deposit_total.amount >= quant.amount, "deposit not enough." );
+    eosio_assert( it.deposit_his.amount >= quant.amount, "deposit not enough." );
 
     _deposit.modify( it, 0, [&]( auto& a ) {
         a.deposit_free -= quant;
         a.deposit_total -= quant;
+        a.deposit_his -= quant;
+
     });
 
     if( eosiosystem::isActiveVoter(user) ) {

contracts/hdddeposit/hdddeposit.hpp

@@ -40,6 +40,7 @@ class hdddeposit : public eosio::contract {
             uint8_t     pool_type = 0;
             asset       deposit_total;  //用户押金池总额(扣除了罚金后的总额)
             asset       deposit_free;   //用户押金池剩余的可以给矿机缴纳押金的总额
+            asset       deposit_his;    //用户总抵押量(包含罚金)
             uint64_t    primary_key()const { return account_name.value; }
         };        
         typedef multi_index<N(depositpool), depositpool> depositpool_table;