Log the message contents received from disconnected clients

BUG=29368784

Change-Id: I7c34366132985de93e03d9b316c137dcbc99fbcb
diff --git a/service/java/com/android/server/wifi/scanner/WifiScanningServiceImpl.java b/service/java/com/android/server/wifi/scanner/WifiScanningServiceImpl.java
index fdf3dfa..df0c6e6 100644
--- a/service/java/com/android/server/wifi/scanner/WifiScanningServiceImpl.java
+++ b/service/java/com/android/server/wifi/scanner/WifiScanningServiceImpl.java
@@ -189,7 +189,7 @@
 
             ClientInfo ci = mClients.get(msg.replyTo);
             if (ci == null) {
-                loge("Could not find client info for message " + msg.replyTo);
+                loge("Could not find client info for message " + msg.replyTo + ", msg=" + msg);
                 replyFailed(msg, WifiScanner.REASON_INVALID_LISTENER, "Could not find listener");
                 return;
             }