Fix NPE in ConnectivityService.
If it's configured with a defined network but can't create a network state tracker
for it, it would NPE and restart the framework whenever a default network
disconnects.
bug:5603268
Change-Id: I816c4f522d766e0353a713623f6635b03395b01e
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index fc87033..6e4aca7 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -1597,6 +1597,7 @@
if (checkType == prevNetType) continue;
if (mNetConfigs[checkType] == null) continue;
if (!mNetConfigs[checkType].isDefault()) continue;
+ if (mNetTrackers[checkType] == null) continue;
// Enabling the isAvailable() optimization caused mobile to not get
// selected if it was in the middle of error handling. Specifically