Litecoin: Adjust nCheckDepth value

src/main.cpp

@@ -4158,7 +4158,7 @@ bool CVerifyDB::VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview,
 
     // Verify blocks in the best chain
     if (nCheckDepth <= 0)
-        nCheckDepth = 1000000000; // suffices until the year 19000
+        nCheckDepth = 4000000000; // suffices until the year 19000
     if (nCheckDepth > chainActive.Height())
         nCheckDepth = chainActive.Height();
     nCheckLevel = std::max(0, std::min(4, nCheckLevel));