Stop leaks.

Bug: 37749857
Test: the following to see leaks
    export ASAN_OPTIONS=""
    mma SANITIZE_HOST=address
Test: runtests_asan.sh

Change-Id: I15b5da5a35262f13835f41f1ae8e1ffb853bceda
diff --git a/runtests_asan.sh b/runtests_asan.sh
new file mode 100755
index 0000000..b796fba
--- /dev/null
+++ b/runtests_asan.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+export ASAN_OPTIONS=""
+export SANITIZE_HOST=address
+
+./runtests.sh
+