Fix for the toggle airplane mode hidden API

Fix to https://googleplex-android-review.git.corp.google.com/#/c/356900/
Previous implementation throws SecurityException when the API is called from apps.
bug:10653570

Change-Id: I95ae6f07db74d881f1a8d3d40a6486105a068e90

services/java/com/android/server/ConnectivityService.java

@@ -4684,12 +4684,12 @@ public class ConnectivityService extends IConnectivityManager.Stub {
     @Override
     public void setAirplaneMode(boolean enable) {
         enforceConnectivityInternalPermission();
+        final long ident = Binder.clearCallingIdentity();
+        try {
             final ContentResolver cr = mContext.getContentResolver();
             Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0);
             Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
             intent.putExtra("state", enable);
-        final long ident = Binder.clearCallingIdentity();
-        try {
             mContext.sendBroadcast(intent);
         } finally {
             Binder.restoreCallingIdentity(ident);