Modified test for bug 396024 again, now Mac is ignored, since this test could never work there

layout/base/tests/Makefile.in

@@ -83,6 +83,7 @@ ifdef MOZ_MOCHITEST
 _TEST_FILES =	\
 		test_bug66619.html \
 		test_bug388019.html \
+		test_bug396024.html \
 		test_bug399284.html \
 		test_bug399951.html \
 		test_bug404209.xhtml \

layout/base/tests/test_bug396024.html

@@ -63,6 +63,7 @@ function run()
   } catch(e) {
      //don't try to test on Mac, since the print preview code doesn't work there
      SimpleTest.finish();
+     return;
   }
 
   if (printService.defaultPrinterName != '') {