Why this worked before? Because of memory leak, _disk was alive and then context pointer in the appendDisk callback was still valid. But now, since we're properly releasing the _disk, it can be invalid if we keep appendDisk callback around, because context can point to a garbage.
This PR:
[super init]callWhy this worked before? Because of memory leak,
_diskwas alive and thencontextpointer in theappendDiskcallback was still valid. But now, since we're properly releasing the_disk, it can be invalid if we keepappendDiskcallback around, becausecontextcan point to a garbage.