libmemtrack: Use the lock to protect the initialization of am: 1dd94f0972 am: 0e94dc42f1

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmemtrack/+/3255525

Change-Id: I35afa00a8a12e0287e2ef447e6175213f9a3deb6
Signed-off-by: Automerger Merge Worker <[email protected]>
tree: 37974a68507f61851840f2e2c2045e5d9ab1db84
  1. include/
  2. Android.bp
  3. memtrack.cpp
  4. memtrack_test.cpp
  5. OWNERS
  6. PREUPLOAD.cfg