Add missing return statement in cQMIProtocolServer::GetDeviceMEID.

BUG=chromium:690613
TEST=Run unit tests and network3g tests with Gobi3k modem.

Change-Id: I6f1e2b41c8aeff05e79a148d2446517ff536340a
Reviewed-on: https://chromium-review.googlesource.com/440407
Commit-Ready: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed