Binder.restoreCallingIdentity moved from 'catch' to 'finally' block.

Clearing the calling identity should be restored in the finally block.
In WallpaperManagerService.WallpaperConnection.engineShown method
it was restored in catch block. This CL corrects that issue.

Bug: 256605760
Test: n/a
Change-Id: Ibe1e252c6ef8728b0706fe1f58d1c56955ce5733

services/core/java/com/android/server/wallpaper/WallpaperManagerService.java

@@ -1549,8 +1549,9 @@ public class WallpaperManagerService extends IWallpaperManager.Stub
                     try {
                         mReply.sendResult(null);
                     } catch (RemoteException e) {
-                        Binder.restoreCallingIdentity(ident);
                         Slog.d(TAG, "failed to send callback!", e);
+                    } finally {
+                        Binder.restoreCallingIdentity(ident);
                     }
                     mReply = null;
                 }