Only show keypoolsize_hd_internal if HD split is enabled

Author: jonasschnelli

src/wallet/rpcwallet.cpp

@@ -2425,7 +2425,7 @@ UniValue getwalletinfo(const JSONRPCRequest& request)
             "  \"txcount\": xxxxxxx,              (numeric) the total number of transactions in the wallet\n"
             "  \"keypoololdest\": xxxxxx,         (numeric) the timestamp (seconds since Unix epoch) of the oldest pre-generated key in the key pool\n"
             "  \"keypoolsize\": xxxx,             (numeric) how many new keys are pre-generated (only counts external keys)\n"
-            "  \"keypoolsize_hd_internal\": xxxx, (numeric) how many new keys are pre-generated for internal use (used for change outputs, only appears if HD is enabled otherwise there is no need for internal keys)\n"
+            "  \"keypoolsize_hd_internal\": xxxx, (numeric) how many new keys are pre-generated for internal use (used for change outputs, only appears if the wallet is using this feature, otherwise external keys are used)\n"
             "  \"unlocked_until\": ttt,           (numeric) the timestamp in seconds since epoch (midnight Jan 1 1970 GMT) that the wallet is unlocked for transfers, or 0 if the wallet is locked\n"
             "  \"paytxfee\": x.xxxx,              (numeric) the transaction fee configuration, set in " + CURRENCY_UNIT + "/kB\n"
             "  \"hdmasterkeyid\": \"<hash160>\"     (string) the Hash160 of the HD master pubkey\n"
@@ -2447,7 +2447,7 @@ UniValue getwalletinfo(const JSONRPCRequest& request)
     obj.push_back(Pair("keypoololdest", pwallet->GetOldestKeyPoolTime()));
     obj.push_back(Pair("keypoolsize", (int64_t)kpExternalSize));
     CKeyID masterKeyID = pwallet->GetHDChain().masterKeyID;
-    if (!masterKeyID.IsNull()) {
+    if (!masterKeyID.IsNull() && pwallet->CanSupportFeature(FEATURE_HD_SPLIT)) {
         obj.push_back(Pair("keypoolsize_hd_internal",   (int64_t)(pwallet->GetKeyPoolSize() - kpExternalSize)));
     }
     if (pwallet->IsCrypted()) {