fix browser.test_uuid to use the temp test dir normally

tests/test_browser.py

@@ -1856,15 +1856,15 @@ void *getBindBuffer() {
 
     # First run tests in Node and/or SPIDERMONKEY using run_js. Use closure compiler so we can check that
     # require('crypto').randomBytes and window.crypto.getRandomValues doesn't get minified out.
-    Popen([PYTHON, EMCC, '-O2', '--closure', '1', path_from_root('tests', 'uuid', 'test.c'), '-o', path_from_root('tests', 'uuid', 'test.js')], stdout=PIPE, stderr=PIPE).communicate()
+    Popen([PYTHON, EMCC, '-O2', '--closure', '1', path_from_root('tests', 'uuid', 'test.c'), '-o', 'test.js'], stdout=PIPE, stderr=PIPE).communicate()
 
-    test_js_closure = open(path_from_root('tests', 'uuid', 'test.js')).read()
+    test_js_closure = open('test.js').read()
 
     # Check that test.js compiled with --closure 1 contains ").randomBytes" and "window.crypto.getRandomValues"
     assert ").randomBytes" in test_js_closure
     assert "window.crypto.getRandomValues" in test_js_closure
 
-    out = run_js(path_from_root('tests', 'uuid', 'test.js'), full_output=True)
+    out = run_js('test.js', full_output=True)
     print out
 
     # Tidy up files that might have been created by this test.