ADB: fix  warning: no newline at end of file [-Wnewline-eof]

Warning found by Clang

Change-Id: I7b801808aefa294e32fff560ea1a49620f0e0ea0
Reviewed-on: https://code.wireshark.org/review/5249
Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Michal Orynicz <michal.orynicz@tieto.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>