Fix calling new DataLock twice

plugin/src/main/java/com/alttd/datalock/DataLock.java

@@ -20,7 +20,7 @@ public class DataLock implements DataLockAPI {
     private final PluginMessageListener pluginMessageListener;
     private final DataLockLib plugin;
     private final Idempotency activeRequests;
-    protected DataLock() {
+    private DataLock() {
         DataLockAPI.Provider.register(this);
         pluginMessageListener = new PluginMessageListener();
         plugin = DataLockLib.getInstance();

plugin/src/main/java/com/alttd/datalock/DataLockLib.java

@@ -18,7 +18,7 @@ public class DataLockLib extends JavaPlugin {
 
     @Override
     public void onEnable() {
-        dataLock = new DataLock();
+        dataLock = DataLock.getInstance();
     }
 
     @Override