Modernize codebase by replacing NULL with nullptr

Fixes -Wzero-as-null-pointer-constant warning for binder.

Test: m
Bug: 68236239
Change-Id: I8184bd6aa4ebff1bd8c88dad16886e98df853b03
1 file changed
tree: e733767bf57176c72280e82bbb204582b7851500
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/