Extra test.

Author: seanmorris

test/test_browser.py

@@ -5428,6 +5428,7 @@ def test(args, expect_fail):
       else:
         return self.run_browser('a.out.html', '/report_result?exit:0')
 
+    test([], expect_fail=False)
     test([], expect_fail=True)
     test(['-sLEGACY_VM_SUPPORT'], expect_fail=False)
     test(['-sLEGACY_VM_SUPPORT', '-sNO_POLYFILL'], expect_fail=True)