Stop framework during vts test

Bug: 375335336
Test: atest VtsHalBiometricsFingerprintTargetTest
Change-Id: Iaeac1f7762f935cb5d74d27760cadf1e73da09c5
diff --git a/biometrics/fingerprint/aidl/vts/Android.bp b/biometrics/fingerprint/aidl/vts/Android.bp
index 628f03f..7c9cd8c 100644
--- a/biometrics/fingerprint/aidl/vts/Android.bp
+++ b/biometrics/fingerprint/aidl/vts/Android.bp
@@ -27,4 +27,5 @@
         "general-tests",
         "vts",
     ],
+    disable_framework: true,
 }
diff --git a/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp b/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
index 1cd8c76..2cc5e56 100644
--- a/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
+++ b/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
@@ -167,6 +167,7 @@
 
     void TearDown() override {
         // Close the mSession.
+        ASSERT_NE(mSession, nullptr);
         ASSERT_TRUE(mSession->close().isOk());
 
         // Make sure the mSession is closed.