RefBase: test for stack check

Surprised this isn't breaking anything, so wanted to
make sure it worked.

Bug: 232557259
Test: libutils_test
Change-Id: Iaec47d644c02dc190e397c6f84dcfab4cc76f566
diff --git a/libutils/RefBase_test.cpp b/libutils/RefBase_test.cpp
index b89779d..aed3b9b 100644
--- a/libutils/RefBase_test.cpp
+++ b/libutils/RefBase_test.cpp
@@ -275,6 +275,11 @@
     EXPECT_FALSE(isDeleted);
 }
 
+TEST(RefBase, StackOwnershipDeath) {
+    bool isDeleted;
+    EXPECT_DEATH({ Foo foo(&isDeleted); foo.incStrong(nullptr); }, "");
+}
+
 // Set up a situation in which we race with visit2AndRremove() to delete
 // 2 strong references.  Bar destructor checks that there are no early
 // deletions and prior updates are visible to destructor.