[scudo] Initialize local variable to avoid compiler warning am: 32dc149015 am: 070743ddf4 am: c26b433f0b am: 768f22a107

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/2066949

Change-Id: I16614bffc307f5cbad74fc16f71e6cb20dded4dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>