Fix segfault in EncryptionOperationsTest.RsaPkcs1Success am: 478715818f am: 64e8e72963 am: adb0da89b4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1607102

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9a1040b7e544dba8f73c4e975a6164c20602d99f