[PATCH] checkpatch: don't try to get maintained status when --no-tree is given

[Jerome Forissier]

Fixes the following warning:
Use of uninitialized value $root in concatenation (.) or string at 
/path/to/checkpatch.pl line 764.

Signed-off-by: Jerome Forissier <jerome.foriss...@linaro.org>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a8368d1..aa694bc 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -761,7 +761,7 @@ sub seed_camelcase_file {
 sub is_maintained_obsolete {
        my ($filename) = @_;
 
-       return 0 if (!(-e "$root/scripts/get_maintainer.pl"));
+       return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
 
        my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol 
--nogit --nogit-fallback -f $filename 2>&1`;
 
-- 
2.7.4