Force avg zins/zouts to be a double

src/wallet/rpcwallet.cpp

@@ -3769,8 +3769,8 @@ UniValue z_getstats(const UniValue& params, bool fHelp, const CPubKey& mypk)
         }
     }
     UniValue ret(UniValue::VOBJ);
-    double avg_zins  = total_ztxs > 0 ? total_zins  / total_ztxs : 0.0;
-    double avg_zouts = total_ztxs > 0 ? total_zouts / total_ztxs : 0.0;
+    double avg_zins  = total_ztxs > 0 ? (double) total_zins  / total_ztxs : 0.0;
+    double avg_zouts = total_ztxs > 0 ? (double) total_zouts / total_ztxs : 0.0;
     ret.pushKV("total_ztxs", total_ztxs);
     ret.pushKV("avg_zins", avg_zins);
     ret.pushKV("avg_zouts", avg_zouts);