MIDI: Fix UserManager.getMainUser() crash

There is no need to call getMainUser() when we can simply get the user
id from the app uid.

Bug: 293928587
Test: Connect Jamstick to MIDI+BTLE app
Test: Verify MidiScope sees the device and receives data
Change-Id: If2adb5118132dc445652c902ace29f0b1fccb057

1 files changed, 1 insertions, 4 deletions

diff --git a/services/midi/java/com/android/server/midi/MidiService.java b/services/midi/java/com/android/server/midi/MidiService.java
index c0cfa53a0a98..486ddb4cb354 100644
--- a/services/midi/java/com/android/server/midi/MidiService.java
+++ b/services/midi/java/com/android/server/midi/MidiService.java
@@ -420,14 +420,11 @@ public class MidiService extends IMidiManager.Stub {
             setDeviceServer(server);
         }
 
-        @RequiresPermission(anyOf = {Manifest.permission.QUERY_USERS,
-                Manifest.permission.CREATE_USERS,
-                Manifest.permission.MANAGE_USERS})
         public Device(BluetoothDevice bluetoothDevice) {
             mBluetoothDevice = bluetoothDevice;
             mServiceInfo = null;
             mUid = mBluetoothServiceUid;
-            mUserId = mUserManager.getMainUser().getIdentifier();
+            mUserId = UserHandle.getUserId(mUid);
         }
 
         private void setDeviceServer(IMidiDeviceServer server) {