Fix use-after-move in //base/threading/

Fix use-after-move (potential) bugs found by the
"bugprone-use-after-move" clang-tidy check.

Bug: 1122844
Change-Id: Ie1df128b9c677f4b86ea138cb8087cd68285dbbd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2383012Reviewed-by: François Doray <fdoray@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803129}

base/threading/post_task_and_reply_impl.cc

@@ -100,8 +100,9 @@ class PostTaskAndReplyRelay {
     // |relay| is moved into a callback.
     SequencedTaskRunner* reply_task_runner_raw = relay.reply_task_runner_.get();
 
+    const Location from_here = relay.from_here_;
     reply_task_runner_raw->PostTask(
-        relay.from_here_,
+        from_here,
         BindOnce(&PostTaskAndReplyRelay::RunReply, std::move(relay)));
   }