Fix: Thread-safety for static impl and missing null check in ConnectionThread

Author: SBALAVIGNESH123

play-services-wearable/core/src/main/java/org/microg/gms/wearable/WearableImpl.java

@@ -686,10 +686,10 @@ private class ConnectionThread extends Thread {
         public void run() {
             while (!isInterrupted()) {
                 try {
-                    BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
                     if (adapter != null && adapter.isEnabled()) {
                         Set<BluetoothDevice> bondedDevices = adapter.getBondedDevices();
-                        for (BluetoothDevice device : bondedDevices) {
+                        if (bondedDevices != null) {
+                            for (BluetoothDevice device : bondedDevices) {
                             // Synchronized check for existing connections to this device
                             boolean isConnected = false;
                             synchronized (activeConnections) {
@@ -760,6 +760,7 @@ public void run() {
                             }
 
                         }
+                        }
                     }
                 } catch (Exception e) {
                     Log.w(TAG, "Error in Bluetooth ConnectionThread", e);

play-services-wearable/core/src/main/java/org/microg/gms/wearable/WearableService.java

@@ -33,7 +33,7 @@ public WearableService() {
         super("GmsWearSvc", GmsService.WEAR);
     }
 
-    public static WearableImpl impl;
+    public static volatile WearableImpl impl;
 
     @Override
     public void onCreate() {