Update proguard rules

app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java

@@ -314,6 +314,7 @@ public final class MainActivity extends StageActivity
 
         mStageLayout = (EhStageLayout) ViewUtils.$$(this, R.id.fragment_container);
         mDrawerLayout = (DrawerLayout) ViewUtils.$$(this, R.id.draw_view);
+        mDrawerLayout.setStatusBarBackgroundColor(0);
         mNavView = (NavigationView) ViewUtils.$$(this, R.id.nav_view);
         mRightDrawer = (DrawerView) ViewUtils.$$(this, R.id.right_drawer);
         View headerLayout = mNavView.getHeaderView(0);