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

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

Change-Id: I05e37cfb74befdedafb26b570cca5de153a1acdb