Add a null check for the OnStartTetheringCallback.

This avoids a NullPointerException when trying to call the callback
and gives a more readable error message.

Change-Id: Id0353ef541c76efcb4a9a12c082e1b6ec9389f02
1 file changed
tree: fe06d14421f8d70dfd3177da3e9e7bb474dd08cd
  1. core/
  2. services/
  3. tests/