externalsrc.bbclass: Suppress git errors

Suppress any warnings git might generate when searching for a valid git
directory, as there are use cases where the directory is expected to not
exist and the warning is superfluous

(From OE-Core rev: 66011996e1a8b738b31466fccad9973f8b48f71d)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index 65dd13ddc1..ac1b904e72 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -189,7 +189,7 @@ def srctree_hash_files(d, srcdir=None):
 
     try:
         git_dir = os.path.join(s_dir,
-            subprocess.check_output(['git', '-C', s_dir, 'rev-parse', '--git-dir']).decode("utf-8").rstrip())
+            subprocess.check_output(['git', '-C', s_dir, 'rev-parse', '--git-dir'], stderr=subprocess.DEVNULL).decode("utf-8").rstrip())
     except subprocess.CalledProcessError:
         pass