riched20/tests: Fix a SysAllocString leak

[Jactry Zeng]

I made this leak, sorry.. :(
"What goes around comes around" was confirmed! :p
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From 62525df20184698b4014f89ccefa74e328da12b4 Mon Sep 17 00:00:00 2001
From: Jactry Zeng <jactry92 at gmail.com>
Date: Wed, 12 Mar 2014 22:59:32 +0800
Subject: riched20/tests: Fix a SysAllocString leak.

---
 dlls/riched20/tests/richole.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/riched20/tests/richole.c b/dlls/riched20/tests/richole.c
index 3781e68..ebe89de 100644
--- a/dlls/riched20/tests/richole.c
+++ b/dlls/riched20/tests/richole.c
@@ -378,6 +378,8 @@ static void test_ITextDocument_Open(void)
   todo_wine ok(result == 0, "ITextDocument_Open: Test UTF-16 set wrong text: Result: %s\n", wine_dbgstr_w(bufUnicode));
   release_interfaces(&w, &reOle, &txtDoc, &txtSel);
   DeleteFileW(filename);
+
+  SysFreeString(V_BSTR(&testfile));
 }
 
 START_TEST(richole)
-- 
1.8.3.2