Fix null ref in NetworkMonitorAutoDetect if Connectivity Manager service is unavailable

webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java

Index: webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java
diff --git a/webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java b/webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java
index 77b77be95c1d7a5ea3eee900acff56d09a028c2a..9cae2ef33117767be360f593ded696ea0974a805 100644
--- a/webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java
+++ b/webrtc/sdk/android/api/org/webrtc/NetworkMonitorAutoDetect.java
@@ -590,8 +590,13 @@ public class NetworkMonitorAutoDetect extends BroadcastReceiver {
   }
 
   List<NetworkInformation> getActiveNetworkList() {
+    List<NetworkInformation> connectivityManagerList =
+        connectivityManagerDelegate.getActiveNetworkList();
+    if (connectivityManagerList == null) {
+      return null;

[magjed_webrtc, 2017/07/07 11:49:07]

Shouldn't we still add possible entries from wifiDirectManagerDelegate here?

+    }
     ArrayList<NetworkInformation> result =
-        new ArrayList<NetworkInformation>(connectivityManagerDelegate.getActiveNetworkList());
+        new ArrayList<NetworkInformation>(connectivityManagerList);
     if (wifiDirectManagerDelegate != null) {
       result.addAll(wifiDirectManagerDelegate.getActiveNetworkList());
     }