Fix test case for Windows

Author: cmb69

ext/ffi/tests/bug78714.phpt

@@ -6,7 +6,13 @@ Bug #78714 (funcs returning pointer can't use call convention spec)
 ffi.enable=1
 --FILE--
 <?php
-$ffi = FFI::cdef('char * __cdecl get_zend_version(void);');
+$def = 'char * __cdecl get_zend_version(void);';
+if (substr(PHP_OS, 0, 3) != 'WIN') {
+    $ffi = FFI::cdef($def);
+} else {
+    $dll = 'php7' . (PHP_ZTS ? 'ts' : '') . (PHP_DEBUG ? '_debug' : '') . '.dll';
+    $ffi = FFI::cdef($def, $dll);
+}
 echo substr(FFI::string($ffi->get_zend_version()), 0, 4) . "\n";
 ?>
 --EXPECT--