fix bug of leak

modules/mogo-module-map/src/main/java/com/mogo/module/map/MapFragment.java

@@ -169,11 +169,13 @@ public class MapFragment extends MvpFragment< MapView, MapPresenter > implements
 
     @Override
     public void onDestroyView() {
-        super.onDestroyView();
+        MapBroadCastHelper.getInstance( getContext() ).release();
         if ( mMogoMapView != null ) {
             mMogoMapView.onDestroy();
+            mMogoMapView = null;
+            mMogoMap = null;
         }
-        MapBroadCastHelper.getInstance( getContext() ).release();
         destroy();
+        super.onDestroyView();
     }
 }

modules/mogo-module-map/src/main/java/com/mogo/module/map/MapFragmentProvider.java

@@ -91,4 +91,9 @@ public class MapFragmentProvider implements IMogoModuleProvider {
     public String getAppName() {
         return null;
     }
+
+    @Override
+    public void onDestroy() {
+        mMapFragment = null;
+    }
 }