ClientModeImpl: Add a wtf for duplicate NetworkAgent registration

We invoke unregister & reset mNetworkAgent in handleNetworkDisconnect().
So, this should never be non-null when we create a new NetworkAgent
instance for a new connection.

Bug: 151514192
Test: Manual log verification:
Verified that the log message is not printed for regular wifi
switching.

Change-Id: I0187e50119c8fa0cdb2e900da7e60fb8a3f653f9

1 files changed, 4 insertions, 0 deletions

diff --git a/service/java/com/android/server/wifi/ClientModeImpl.java b/service/java/com/android/server/wifi/ClientModeImpl.java
index 270af89d1..588564ed9 100644
--- a/service/java/com/android/server/wifi/ClientModeImpl.java
+++ b/service/java/com/android/server/wifi/ClientModeImpl.java
@@ -4636,6 +4636,10 @@ public class ClientModeImpl extends StateMachine {
                     .build();
             final NetworkCapabilities nc = getCapabilities(getCurrentWifiConfiguration());
             synchronized (mNetworkAgentLock) {
+                // This should never happen.
+                if (mNetworkAgent != null) {
+                    Log.wtf(TAG, "mNetworkAgent is not null: " + mNetworkAgent);
+                }
                 mNetworkAgent = new WifiNetworkAgent(mContext, getHandler().getLooper(),
                         "WifiNetworkAgent", nc, mLinkProperties, 60, naConfig,
                         mNetworkFactory.getProvider());