[6.0.0] code opt and update sdk of aicloud , map , plus kotlin union

libraries/mogo-map/src/main/java/com/mogo/map/location/GDLocationClient.kt

@@ -26,8 +26,10 @@ class GDLocationClient private constructor() : AMapLocationListener,
     IMogoGDLocationClient {
     //声明LocationClient对象
     private lateinit var mLocationClient: AMapLocationClient
+
     @Volatile
     private var mCityCode: String = ""
+
     @Volatile
     private var mapLocation: AMapLocation? = null
 

libraries/mogo-map/src/main/java/com/mogo/map/overlay/wrapper/line/AMapPolylineWrapper.kt

@@ -48,7 +48,7 @@ class AMapPolylineWrapper(private val id: String, private val delegate: Polyline
     }
 
     override fun isVisible(): Boolean {
-        return delegate.isVisible() ?: false
+        return delegate.isVisible()
     }
 
     override fun setToTop() {