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

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

Change-Id: Id09d6e9aae9f2aaa9fefce0ffc188470bae35c80
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>