[NFC][SCUDO] Fix unittest for -gtest_repeat=10 am: 1eba937048 am: 39d4bf620a am: 68b490f220 am: 8f6882b17f

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/1726414

Change-Id: I68d2a9e331ebf89123e6ce36ad6501c03ca44d20