Close BufferedReader and use primitive boolean for isInBackground.

Author: tusharkhandelwal8

firebase-config/src/main/java/com/google/firebase/remoteconfig/internal/ConfigAutoFetch.java

@@ -54,7 +54,7 @@ public class ConfigAutoFetch {
   private final ConfigUpdateListener retryCallback;
   private final ScheduledExecutorService scheduledExecutorService;
   private final Random random;
-  private Boolean isInBackground;
+  private boolean isInBackground;
 
   public ConfigAutoFetch(
       HttpURLConnection httpURLConnection,
@@ -204,6 +204,8 @@ private void handleNotifications(InputStream inputStream) throws IOException {
         currentConfigUpdateMessage = "";
       }
     }
+
+    reader.close();
   }
 
   private void autoFetch(int remainingAttempts, long targetVersion) {

firebase-config/src/main/java/com/google/firebase/remoteconfig/internal/ConfigRealtimeHttpClient.java

@@ -98,7 +98,7 @@ public class ConfigRealtimeHttpClient {
   private boolean isRealtimeDisabled;
 
   /** Flag to indicate whether or not the app is in the background or not. */
-  private Boolean isInBackground;
+  private boolean isInBackground;
 
   // The HttpUrlConnection and auto-fetcher for this client. Only one of each exist at a time.
   private HttpURLConnection httpURLConnection;

firebase-config/src/test/java/com/google/firebase/remoteconfig/FirebaseRemoteConfigTest.java

@@ -1288,7 +1288,7 @@ public void realtime_stream_listen_and_end_connection() throws Exception {
         .thenReturn(Tasks.forResult(realtimeFetchedContainerResponse));
     configAutoFetch.listenForNotifications();
 
-    verify(inputStreamSpy, times(1)).close();
+    verify(inputStreamSpy, times(2)).close();
   }
 
   @Test