Merge "Make IDumpstateDevice 1.1" am: 99ad09b7e7 am: e067d70f96

Change-Id: Ie88c44e343af970412a32e20a76f336b1def91d9
diff --git a/wifi/1.3/default/wifi.cpp b/wifi/1.3/default/wifi.cpp
index 2f21819..4229d35 100644
--- a/wifi/1.3/default/wifi.cpp
+++ b/wifi/1.3/default/wifi.cpp
@@ -124,6 +124,8 @@
             }
         }
         LOG(ERROR) << "Wifi HAL start failed";
+        // Clear the event callback objects since the HAL start failed.
+        event_cb_handler_.invalidate();
     }
     return wifi_status;
 }
@@ -158,6 +160,8 @@
         }
         LOG(ERROR) << "Wifi HAL stop failed";
     }
+    // Clear the event callback objects since the HAL is now stopped.
+    event_cb_handler_.invalidate();
     return wifi_status;
 }