Signrawtransaction shouldn't require redeemScript for non-p2sh txins.

The redeemScript functionality broke plain offline signing, this
change makes it only look for that parameter when signing a p2sh
input.

src/rpcrawtransaction.cpp

@@ -421,7 +421,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
 
             Object prevOut = p.get_obj();
 
-            RPCTypeCheck(prevOut, map_list_of("txid", str_type)("vout", int_type)("scriptPubKey", str_type)("redeemScript",str_type));
+            RPCTypeCheck(prevOut, map_list_of("txid", str_type)("vout", int_type)("scriptPubKey", str_type));
 
             uint256 txid = ParseHashO(prevOut, "txid");
 
@@ -450,8 +450,11 @@ Value signrawtransaction(const Array& params, bool fHelp)
 
             // if redeemScript given and not using the local wallet (private keys
             // given), add redeemScript to the tempKeystore so it can be signed:
+            if (fGivenKeys && scriptPubKey.IsPayToScriptHash())
+            {
+                RPCTypeCheck(prevOut, map_list_of("txid", str_type)("vout", int_type)("scriptPubKey", str_type)("redeemScript",str_type));
                 Value v = find_value(prevOut, "redeemScript");
-            if (fGivenKeys && scriptPubKey.IsPayToScriptHash() && !(v == Value::null))
+                if (!(v == Value::null))
                 {
                     vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));
                     CScript redeemScript(rsData.begin(), rsData.end());
@@ -459,6 +462,7 @@ Value signrawtransaction(const Array& params, bool fHelp)
                 }
             }
         }
+    }
 
     const CKeyStore& keystore = (fGivenKeys ? tempKeystore : *pwalletMain);