adb: Fix incorrect logging statement

We were logging "fd.get()" after we had already done a
"std::move(fd)".  That won't log the value we were hoping for.
We instead cache the file descriptor value in a local int prior
to the move(), and log that.

Test: TreeHugger
Change-Id: I715874ac63329280ffb55881fb2590fb31dc2457
1 file changed