Fix usage of bash builtin "local" in update_depot_tools.

The bash command "local myvar=$(mycommand)" has the exit status of the
bash builtin "local" rather than the exit status of mycommand.  To get
the exit status of mycommand, "local myvar" should be run separately
on a previous line.


Review URL: https://chromiumcodereview.appspot.com/11308129

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@169446 0039d316-1c4b-4281-b951-d872f2087c98

update_depot_tools

@@ -34,7 +34,8 @@ 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
   }
@@ -49,7 +50,8 @@ function test_git {
 
 # 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
   }
@@ -70,9 +72,10 @@ function is_git_clone_repo {
 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