Fix file loading from bundles on iOS

Bug: skia:
Change-Id: I9b9a7dcbdeb1630794b04d2a5a00d5f496aae85d
Reviewed-on: https://skia-review.googlesource.com/94963
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed