[2.15.0] thread opt

core/function-impl/mogo-core-function-map/src/main/java/com/mogo/eagle/core/function/business/SpeedLimitDataManager.java

@@ -23,7 +23,7 @@ public class SpeedLimitDataManager implements IMoGoChassisLocationGCJ02Listener
 
     private final static String TAG = "SpeedLimitDataManager";
     private static volatile SpeedLimitDataManager instance;
-    private MogoLocation mLocation;
+    private volatile MogoLocation mLocation;
 
     private SpeedLimitDataManager() {
     }