vts: Fix incorrect instance name in Teardown am: a6cc5825e9 am: 9ce5301add

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/12422070

Change-Id: I783c3bd78d5adee5ceee8c4bc55c380b80434949
diff --git a/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp b/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp
index 2715891..a39f064 100644
--- a/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp
+++ b/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp
@@ -72,7 +72,7 @@
             "wifi_softap_wpa3_sae_supported");
     }
 
-    virtual void TearDown() override { stopHostapd(hostapd_instance_name_); }
+    virtual void TearDown() override { stopHostapd(wifi_instance_name_); }
 
    protected:
     bool isWpa3SaeSupport_ = false;