Don't rely on default argument of NDK API.

The NDK APIs are supposed to be C-compatible. This one accidentally
included a default argument, which is a C++ feature. That's being
fixed, so this needs to pass the argument explicitly.

Bug: https://github.com/android/ndk/issues/1920
Test: treehugger
Change-Id: Ia79da4b4593dfd46302cb44298e906bb8e6c4d86