Fix a memory leak in _msi.c (GH-4127) (#4308)

miss-islington · vstinner · commit b74c3d410d9c · 2017-11-07T02:33:41.000-08:00
(cherry picked from commit cb04f75)
diff --git a/PC/_msi.c b/PC/_msi.c
@@ -271,6 +271,7 @@ msiobj_dealloc(msiobj* msidb)
 {
     MsiCloseHandle(msidb->h);
     msidb->h = 0;
+    PyObject_Del(msidb);
 }
 
 static PyObject*
