Merge #413: [backport] Fix crash bug with duplicate inputs within a transaction

05c8066 Fix crash bug with duplicate inputs within a transaction (Suhas Daftuar)

Author: jtimon

src/validation.cpp

@@ -3859,7 +3859,7 @@ bool CheckBlock(const CBlock& block, CValidationState& state, const Consensus::P
 
     // Check transactions
     for (const auto& tx : block.vtx)
-        if (!CheckTransaction(*tx, state, false))
+        if (!CheckTransaction(*tx, state, true))
             return state.Invalid(false, state.GetRejectCode(), state.GetRejectReason(),
                                  strprintf("Transaction check failed (tx hash %s) %s", tx->GetHash().ToString(), state.GetDebugMessage()));