Fixing test for bug 385823 to not depend on clipping of %-overheight cells.

layout/reftests/bugs/385823-2c.html

@@ -7,9 +7,8 @@
   <img src="mozilla-banner.gif" height="100%"/>
   <br/>
   <!-- Add some text content, but make it small enough not
-       to push us to over 70px before we scale the image.
-       This text should end up hidden behind the image. -->
-  <font style="font-size: 20%">text text</font>
+       to push us to over 70px before we scale the image. -->
+  <font style="font-size: 20%; color:rgba(0,0,0,0);">text text</font>
  </tr></td>
 </table>
 </body>