default to hd capture on new osx installs

src/main/java/com/sparrowwallet/sparrow/MainApp.java

@@ -19,6 +19,7 @@ import javafx.application.Application;
 import javafx.scene.text.Font;
 import javafx.stage.Stage;
 import org.controlsfx.glyphfont.GlyphFontRegistry;
+import org.controlsfx.tools.Platform;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.bridge.SLF4JBridgeHandler;
@@ -79,6 +80,10 @@ public class MainApp extends Application {
             Config.get().setCoreWallet("");
         }
 
+        if(Config.get().getHdCapture() == null && Platform.getCurrent() == Platform.OSX) {
+            Config.get().setHdCapture(Boolean.TRUE);
+        }
+
         System.setProperty(Wallet.ALLOW_DERIVATIONS_MATCHING_OTHER_SCRIPT_TYPES_PROPERTY, Boolean.toString(!Config.get().isValidateDerivationPaths()));
 
         AppController appController = AppServices.newAppWindow(stage);

src/main/java/com/sparrowwallet/sparrow/io/Config.java

@@ -37,7 +37,7 @@ public class Config {
     private List<File> recentWalletFiles;
     private Integer keyDerivationPeriod;
     private File hwi;
-    private boolean hdCapture;
+    private Boolean hdCapture;
     private ServerType serverType;
     private String publicElectrumServer;
     private String coreServer;
@@ -263,11 +263,15 @@ public class Config {
         flush();
     }
 
-    public boolean isHdCapture() {
+    public Boolean getHdCapture() {
         return hdCapture;
     }
 
-    public void setHdCapture(boolean hdCapture) {
+    public Boolean isHdCapture() {
+        return hdCapture != null && hdCapture;
+    }
+
+    public void setHdCapture(Boolean hdCapture) {
         this.hdCapture = hdCapture;
         flush();
     }