ensure first_log isn't null after append

test/append-test-log.c

@@ -42,12 +42,21 @@ test_append_test_log(TestState *s)
 // Local Functions
 
 static void
-append_to_empty(TestState *)
+append_to_empty(TestState *s)
 {
 	TestState test;
 	print("\tappend to empty\n");
 	mk_sample_state(&test);
 	append_test_log(&test, "foo");
+
+	// first_log shouldn't be null
+	print("\t\tfirst_log\n");
+	chk_ptr_ne(
+		s,
+		"ERROR: append_test_log(): append to empty: first_log:",
+		test.first_log,
+		0
+	);
 }
 
 //jl