android: Prevent showing games on an invalid view

src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/platform/PlatformGamesFragment.kt

@@ -75,6 +75,9 @@ class PlatformGamesFragment : Fragment(), PlatformGamesView {
     }
 
     override fun showGames(games: Cursor) {
+        if (_binding == null)
+            return
+
         if (binding.gridGames.adapter != null) {
             (binding.gridGames.adapter as GameAdapter).swapCursor(games)
         }