bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587)

No longer use deprecated aliases to functions:

* Replace PyObject_MALLOC() with PyObject_Malloc()
* Replace PyObject_REALLOC() with PyObject_Realloc()
* Replace PyObject_FREE() with PyObject_Free()
* Replace PyObject_Del() with PyObject_Free()
* Replace PyObject_DEL() with PyObject_Free()
diff --git a/PC/_msi.c b/PC/_msi.c
index 504899d..01516e8 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -351,7 +351,7 @@ msiobj_dealloc(msiobj* msidb)
 {
     MsiCloseHandle(msidb->h);
     msidb->h = 0;
-    PyObject_Del(msidb);
+    PyObject_Free(msidb);
 }
 
 static PyObject*