Drop minor GetSerializeSize template

Now that `GetType()` is not propagated, the benefits are not worth the code.

Author: Empact

src/script/sign.h

@@ -147,7 +147,7 @@ static constexpr uint8_t PSBT_SEPARATOR = 0x00;
 template<typename Stream, typename... X>
 void SerializeToVector(Stream& s, const X&... args)
 {
-    WriteCompactSize(s, GetSerializeSizeMany(s, args...));
+    WriteCompactSize(s, GetSerializeSizeMany(s.GetVersion(), args...));
     SerializeMany(s, args...);
 }
 

src/serialize.h

@@ -983,16 +983,10 @@ size_t GetSerializeSize(const T& t, int nVersion = 0)
     return (CSizeComputer(nVersion) << t).size();
 }
 
-template <typename S, typename T>
-size_t GetSerializeSize(const S& s, const T& t)
+template <typename... T>
+size_t GetSerializeSizeMany(int nVersion, const T&... t)
 {
-    return (CSizeComputer(s.GetVersion()) << t).size();
-}
-
-template <typename S, typename... T>
-size_t GetSerializeSizeMany(const S& s, const T&... t)
-{
-    CSizeComputer sc(s.GetType(), s.GetVersion());
+    CSizeComputer sc(nVersion);
     SerializeMany(sc, t...);
     return sc.size();
 }

src/validation.cpp

@@ -1060,7 +1060,7 @@ static bool WriteBlockToDisk(const CBlock& block, CDiskBlockPos& pos, const CMes
         return error("WriteBlockToDisk: OpenBlockFile failed");
 
     // Write index header
-    unsigned int nSize = GetSerializeSize(fileout, block);
+    unsigned int nSize = GetSerializeSize(block, fileout.GetVersion());
     fileout << messageStart << nSize;
 
     // Write block
@@ -1470,7 +1470,7 @@ bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint
         return error("%s: OpenUndoFile failed", __func__);
 
     // Write index header
-    unsigned int nSize = GetSerializeSize(fileout, blockundo);
+    unsigned int nSize = GetSerializeSize(blockundo, fileout.GetVersion());
     fileout << messageStart << nSize;
 
     // Write undo data