Fix usage of bash builtin "local" in update_depot_tools.

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 [ "$USER" == "root" ];
 then
   echo Running depot tools as root is sad.
@@ skipping 16 matching lines @@
   SVN="$base_dir/svn_bin/svn.exe"
 fi
 
 GIT="git"
 if [ -d "$base_dir/git_bin" -a $MINGW = 0 ]; then
   GIT="$base_dir/git_bin/bin/git.exe"
 fi
 
 # Test git and git --version.
 function test_git {
-  local GITV="$("$GIT" --version)" || {
+  local GITV
+  GITV="$("$GIT" --version)" || {
     echo "git isn't installed, please install it"
     exit 1
   }
 
   GITV="${GITV##* }"          # Only examine last word (i.e. version number)
   local GITD=( ${GITV//./ } ) # Split version number into decimals
   if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
     echo "git version is ${GITV}, please update to a version later than 1.6"
     exit 1
   fi
 }
 
 # Test git svn and git svn --version.
 function test_git_svn {
-  local GITV="$("$GIT" svn --version)" || {
+  local GITV
+  GITV="$("$GIT" svn --version)" || {
     echo "git-svn isn't installed, please install it"
     exit 1
   }
 
   GITV="${GITV#* version }"   # git svn --version has extra output to remove.
   GITV="${GITV% (svn*}"
   local GITD=( ${GITV//./ } ) # Split version number into decimals
   if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
     echo "git version is ${GITV}, please update to a version later than 1.6"
     exit 1
   fi
 }
 
 function is_git_clone_repo {
   "$GIT" config remote.origin.fetch > /dev/null
 }
 
 function update_git_repo {
   if is_git_clone_repo; then
     git fetch -q origin &> /dev/null
-    local REBASE_TXT=$(git rebase -q origin/master 2>&1)
-    local STATUS=$?
-    if [[ $STATUS != 0 ]]; then
+    local REBASE_TXT STATUS
+    REBASE_TXT=$(git rebase -q origin/master 2>&1)
+    STATUS=$?
+    if [[ $STATUS -ne 0 ]]; then
       echo "depot_tools update failed. Conflict in $base_dir" >&2
       echo "$REBASE_TXT" >&2
       git rebase --abort 2> /dev/null
     fi
     return $STATUS
   fi
 
   test_git_svn
   # work around a git-svn --quiet bug
   OUTPUT=`"$GIT" svn rebase -q -q`
@@ skipping 23 matching lines @@
   # Update the root directory to stay up-to-date with the latest depot_tools.
   BEFORE_REVISION=$(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 {} \;