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-rw-r--r--src/rpc/util.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 7517f64ea1..24ab21a947 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -98,7 +98,7 @@ CAmount AmountFromValue(const UniValue& value, int decimals)
uint256 ParseHashV(const UniValue& v, std::string strName)
{
- std::string strHex(v.get_str());
+ const std::string& strHex(v.get_str());
if (64 != strHex.length())
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("%s must be of length %d (not %d, for '%s')", strName, 64, strHex.length(), strHex));
if (!IsHex(strHex)) // Note: IsHex("") is false