refactor: reduce unnecessary complexity in ParseNonRFCJSONValue

Since https://github.com/jgarzik/univalue/pull/31, UniValue::read() can now
parse raw literals directly, so there is no more need to wrap them into an
array first.

src/rpc/client.cpp

@@ -253,13 +253,11 @@ static CRPCConvertTable rpcCvtTable;
 /** Non-RFC4627 JSON parser, accepts internal values (such as numbers, true, false, null)
  * as well as objects and arrays.
  */
-UniValue ParseNonRFCJSONValue(const std::string& strVal)
+UniValue ParseNonRFCJSONValue(const std::string& raw)
 {
-    UniValue jVal;
+    UniValue parsed;
-    if (!jVal.read(std::string("[")+strVal+std::string("]")) ||
+    if (!parsed.read(raw)) throw std::runtime_error(std::string("Error parsing JSON: ") + raw);
-        !jVal.isArray() || jVal.size()!=1)
+    return parsed;
-        throw std::runtime_error(std::string("Error parsing JSON: ") + strVal);
-    return jVal[0];
 }
 
 UniValue RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)

src/rpc/client.h

@@ -17,6 +17,6 @@ UniValue RPCConvertNamedValues(const std::string& strMethod, const std::vector<s
 /** Non-RFC4627 JSON parser, accepts internal values (such as numbers, true, false, null)
  * as well as objects and arrays.
  */
-UniValue ParseNonRFCJSONValue(const std::string& strVal);
+UniValue ParseNonRFCJSONValue(const std::string& raw);
 
 #endif // BITCOIN_RPC_CLIENT_H