Wifi: Slightly refactor LogcatLogTest

Refactor so that there is no issue with CheckReturnValue warnings.

(cherry picked from commit bb5b6a2a1dbd68d582d032bf89f97ef2d65ee8ed)

Bug: 73094025
Test: m javac-check RUN_ERROR_PRONE=true
Merged-In: I83df7baf22c4329d1a8e24c17b1b8d656953d201
Change-Id: I83df7baf22c4329d1a8e24c17b1b8d656953d201
1 file changed
tree: 9f3fc855bf623a7933efe14f483f2b975da6cb08
  1. service/
  2. PREUPLOAD.cfg