export broadcast receiver in BlockedNumberActivity

This commit adds the exported flag for the receivers registered
for BLOCK_SUPPRESSION_STATE_CHANGED
BLOCK_SUPPRESSION_STATE_CHANGED is sent by the BlockedNumberProvider.

Fixes: 274915661
Fixes: 272947672
Test: m Telecom, manual test
Change-Id: I0dbf312439e44caa501711784fde8fc45dba9a2b
diff --git a/src/com/android/server/telecom/settings/BlockedNumbersActivity.java b/src/com/android/server/telecom/settings/BlockedNumbersActivity.java
index 6e2eb97..7345a67 100644
--- a/src/com/android/server/telecom/settings/BlockedNumbersActivity.java
+++ b/src/com/android/server/telecom/settings/BlockedNumbersActivity.java
@@ -40,7 +40,6 @@
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -156,7 +155,8 @@
             }
         };
         registerReceiver(mBlockingStatusReceiver, new IntentFilter(
-                BlockedNumberContract.SystemContract.ACTION_BLOCK_SUPPRESSION_STATE_CHANGED));
+                BlockedNumberContract.SystemContract.ACTION_BLOCK_SUPPRESSION_STATE_CHANGED),
+                Context.RECEIVER_EXPORTED);
 
         getLoaderManager().initLoader(0, null, this);
     }