git svn --version doesn't work when called outside a git checkout.

TEST=none
BUG=none
TBR=nasser

Review URL: http://codereview.chromium.org/523166

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@35800 0039d316-1c4b-4281-b951-d872f2087c98

gclient

@@ -42,7 +42,8 @@ function test_git_svn {
 # Update git checkouts prior the cygwin check, we don't want to use msysgit.
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.git" ]
 then
-  test_git_svn
+  # Skip this call since it fails outside a git checkout.
+  #test_git_svn
   (cd "$base_dir"; git svn rebase -q -q)
 fi