Fix memory leak

Bug: 166073521
Test: atest CtsNNAPIBenchmarkTestCases
Change-Id: If49be2b83e703d9f038e6d82a9b6439fcb96299e
Merged-In: If49be2b83e703d9f038e6d82a9b6439fcb96299e
(cherry picked from commit 91433082cf3a882b4e38f4ae58afbe5216a74850)
1 file changed