fix inline tags being tokenized as blocks

test/hopdown.test.ts

@@ -153,6 +153,7 @@ suite('Markdown to HTML Round-Trips', () => {
         assert('Escape sequence \\`', '\\`not code\\`',   '<p>\\`not code\\`</p>');
 
         assert('trailing space', '*i* ', '<p><em>i</em> </p>');
+        assert('no closing delim', '*', '<p>*</p>');
     });
 
 });