Make sure the mBinder is not null before clearing listener

Bug: 77693258
Test: Unit Tests/GTS Tests
Merged-In: I485bbd0a6d4f2ba550911d5c4a55eb9936ac7981
Change-Id: I85bae2f073960b81ba0afe791138d2765a7f4ed6

parent d0423bf7

src/java/com/android/ims/MmTelFeatureConnection.java

+5 −1

Original line number	Diff line number	Diff line
		@@ -451,7 +451,11 @@ public class MmTelFeatureConnection {
		mRegistrationCallbackManager.close();
		mCapabilityCallbackManager.close();
		try {
		synchronized (mLock) {
		if (isBinderAlive()) {
		getServiceInterface(mBinder).setListener(null);
		}
		}
		} catch (RemoteException e) {
		Log.w(TAG, "closeConnection: couldn't remove listener!");
		}