Don't update git url if 'read' times out

update_depot_tools

 #!/usr/bin/env bash
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script will try to sync the bootstrap directories and then defer control.
 
 if [ "$USER" == "root" ];
 then
   echo Running depot tools as root is sad.
@@ skipping 61 matching lines @@
 }
 
 function update_git_repo {
   remote_url=$("$GIT" config --get remote.origin.url)
   if [ -n "$remote_url" -a "$remote_url" != "$CANONICAL_GIT_URL" ]; then
     echo "Your copy of depot_tools is configured to fetch from an obsolete URL:"
     echo
     echo "  $remote_url"
     echo
     read -t 60 -p "OK to update it to $CANONICAL_GIT_URL ? [Y/n] " -n 1
+    STATUS=$?
     echo
-    if [ $? -ne "0" ]; then
+    if [[ $STATUS -ne 0 ]]; then
       echo "Timeout; not updating remote URL."
     elif [ -z "$REPLY" -o "$REPLY" = "Y" -o "$REPLY" = "y" ]; then
       "$GIT" config remote.origin.url "$CANONICAL_GIT_URL"
       echo "Remote URL updated."
     fi
   fi
 
   if is_git_clone_repo; then
     git fetch -q origin &> /dev/null
     local REBASE_TXT STATUS
@@ skipping 36 matching lines @@
   # Update the root directory to stay up-to-date with the latest depot_tools.
   BEFORE_REVISION=$(get_svn_revision)
   "$SVN" -q up "$base_dir"
   AFTER_REVISION=$(get_svn_revision)
   if [[ "$BEFORE_REVISION" != "$AFTER_REVISION" ]]; then
     echo "Depot Tools has been updated to revision $AFTER_REVISION." 1>&2
   fi
 fi
 
 find "$base_dir" -iname "*.pyc" -exec rm {} \;