Fix use-after-move in //chrome/browser/printing/

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

Bug: 1122844
Change-Id: I0c067c8b927baae4ce5c81dde91bbd1d45df635b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2382813
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802881}

chrome/browser/printing/print_job_manager.cc

@@ -62,7 +62,8 @@ void PrintQueriesQueue::Shutdown() {
   // corresponding PrintJob, so any pending preview requests are not covered
   // by PrintJobManager::StopJobs and should be stopped explicitly.
   for (auto& query : queries_to_stop) {
-    query->PostTask(
+    PrinterQuery* const query_ptr = query.get();
+    query_ptr->PostTask(
         FROM_HERE, base::BindOnce(&PrinterQuery::StopWorker, std::move(query)));
   }
 }