Fixed test for decoupled <?= as of r311260

tests/lang/short_tags.004.phpt

@@ -4,8 +4,6 @@ short_open_tag: Off, asp_tags: Off
 short_open_tag=off
 asp_tags=off
 --FILE--
-<?='this should get echoed'?>
-
 <%= 'so should this' %>
 
 <?php
@@ -21,9 +19,8 @@ $a = 'This gets echoed twice';
 <?php
    echo "{$b}";
 ?>
+<?= "{$b}"?>
 --EXPECTF--
-<?='this should get echoed'?>
-
 <%= 'so should this' %>
 
 
@@ -34,4 +31,6 @@ $a = 'This gets echoed twice';
 <? $b=3; ?>
 
 
+Notice: Undefined variable: b in %s on line %d
+
 Notice: Undefined variable: b in %s on line %d