Add test case for previous commit

Forgot to "git add".

Author: nikic

Zend/tests/recv_init_ref_type.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Check by-ref RECV_INIT with single type
+--FILE--
+<?php
+
+function test(array &$foo = []) {
+}
+
+try {
+    $bar = 42;
+    test($bar);
+} catch (TypeError $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECTF--
+test(): Argument #1 ($foo) must be of type array, int given, called in %s on line %d