Fix memory leak in StrikeDatabaseIntegratorTestStrikeDatabaseTest

Leak is reported in ASAN builds.

Change-Id: I1c56755a7c7fb38e795faa00e0ca6923e4ff21aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1541184
Reviewed-by: Jared Saul <jsaul@google.com>
Commit-Queue: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#644858}
1 file changed