Report on-disk size in gettxoutsetinfo

src/txdb.cpp

@@ -67,6 +67,11 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
     return db.WriteBatch(batch);
 }
 
+size_t CCoinsViewDB::EstimateSize() const
+{
+    return db.EstimateSize(DB_COINS, (char)(DB_COINS+1));
+}
+
 CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory, bool fWipe) : CDBWrapper(GetDataDir() / "blocks" / "index", nCacheSize, fMemory, fWipe) {
 }