Fix compilation errors

Author: chronoxor

.github/workflows/build-windows-msys2.yml

@@ -39,7 +39,6 @@ jobs:
 
       - name: "Build"
         env:
-          JAVA_HOME: ${{ env.JAVA_HOME_21_X64 }}
           INCLUDE: C:\msys64\usr\include\w32api
           LIB: C:\msys64\usr\lib\w32api
         run: |

proto/trade.h

@@ -201,6 +201,10 @@ struct Order
         Volume = model.volume();
     }
 
+    // zpp::bits serialization
+
+    using serialize = zpp::bits::members<6>;
+
     // JSON serialization
 
     template<typename OutputStream>
@@ -321,6 +325,10 @@ struct Balance
         Amount = model.amount();
     }
 
+    // zpp::bits serialization
+
+    using serialize = zpp::bits::members<2>;
+
     // JSON serialization
 
     template<typename OutputStream>
@@ -500,6 +508,10 @@ struct Account
         }
     }
 
+    // zpp::bits serialization
+
+    using serialize = zpp::bits::members<4>;
+
     // JSON serialization
 
     template<typename OutputStream>
@@ -539,11 +551,6 @@ struct Account
     }
 };
 
-// zpp::bits serialization
-auto serialize(const Order&) -> zpp::bits::members<6>;
-auto serialize(const Balance&) -> zpp::bits::members<2>;
-auto serialize(const Account&) -> zpp::bits::members<4>;
-
 } // namespace Trade
 
 #endif // CPPSERIALIZATION_PROTO_TRADE_H