ultrahdr: Fix nan occurence during xmp generation am: cd3f6373 am: 43665b07

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23539346



Change-Id: I5d2f6e40da3d47778a842000310442d7bc1d2238
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>