check for null values in rpc args and handle appropriately

1 files changed, 3 insertions, 3 deletions

diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index b8c94d32ec..26f4378718 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -101,7 +101,7 @@ UniValue getnetworkhashps(const JSONRPCRequest& request)
        );
 
     LOCK(cs_main);
-    return GetNetworkHashPS(request.params.size() > 0 ? request.params[0].get_int() : 120, request.params.size() > 1 ? request.params[1].get_int() : -1);
+    return GetNetworkHashPS(!request.params[0].isNull() ? request.params[0].get_int() : 120, !request.params[1].isNull() ? request.params[1].get_int() : -1);
 }
 
 UniValue generateBlocks(std::shared_ptr<CReserveScript> coinbaseScript, int nGenerate, uint64_t nMaxTries, bool keepScript)
@@ -171,7 +171,7 @@ UniValue generatetoaddress(const JSONRPCRequest& request)
 
     int nGenerate = request.params[0].get_int();
     uint64_t nMaxTries = 1000000;
-    if (request.params.size() > 2) {
+    if (!request.params[2].isNull()) {
         nMaxTries = request.params[2].get_int();
     }
 
@@ -373,7 +373,7 @@ UniValue getblocktemplate(const JSONRPCRequest& request)
     UniValue lpval = NullUniValue;
     std::set<std::string> setClientRules;
     int64_t nMaxVersionPreVB = -1;
-    if (request.params.size() > 0)
+    if (!request.params[0].isNull())
     {
         const UniValue& oparam = request.params[0].get_obj();
         const UniValue& modeval = find_value(oparam, "mode");