ultrahdr: Fix nan occurence during xmp generation am: cd3f6373 am: ab9b4e41

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



Change-Id: I074c6d11e9259859ae99e4be21b2cec22c3eec4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>