Convert short tag to standard tag in Zend test file

Girgias · cmb69 · commit 63f1def36799 · 2019-07-16T15:26:01.000+02:00
Closes phpGH-4389. (cherry picked from commit e6c2b28)
diff --git a/Zend/tests/bug78271.phpt b/Zend/tests/bug78271.phpt
@@ -1,7 +1,7 @@
 --TEST--
 Bug #78271: Invalid result of if-else
 --FILE--
-<?
+<?php
 function test($a, $b){
     if ($a==10) {
         $w="x";
