Add a comment for some code I don't understand. Why would needsfree

be true if we didn't malloc the code?  Seems like the code is wrong
or could use comments.

Also verify if the buildbots are working properly for the 2.5 branch.

Modules/_ctypes/_ctypes.c

@@ -2199,6 +2199,7 @@ static void CData_MallocBuffer(CDataObject *obj, StgDictObject *dict)
 	if ((size_t)dict->size <= sizeof(obj->b_value)) {
 		/* No need to call malloc, can use the default buffer */
 		obj->b_ptr = (char *)&obj->b_value;
+		/* XXX(nnorwitz): shouldn't b_needsfree be 0? */
 		obj->b_needsfree = 1;
 	} else {
 		/* In python 2.4, and ctypes 0.9.6, the malloc call took about