[jhbuild] Compare bytes/str correctly in both python 2 & 3

[Christoph Reiter <creiter src gnome org>]

commit 31461013e57ab16cf4c54deb311680bff1cbf48a
Author: Heewa Barfchin <heewa b gmail com>
Date:   Thu Jun 25 22:47:52 2020 -0400

    Compare bytes/str correctly in both python 2 & 3

 jhbuild/versioncontrol/git.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/jhbuild/versioncontrol/git.py b/jhbuild/versioncontrol/git.py
index 806a79ba..c2d21738 100644
--- a/jhbuild/versioncontrol/git.py
+++ b/jhbuild/versioncontrol/git.py
@@ -32,7 +32,7 @@ from jhbuild.utils.cmds import get_output, check_version
 from jhbuild.versioncontrol import Repository, Branch, register_repo_type
 from jhbuild.utils import inpath, _
 from jhbuild.utils.sxml import sxml
-from jhbuild.utils import urlutils
+from jhbuild.utils import urlutils, udecode
 from jhbuild.utils.urlutils import urlparse_mod
 from jhbuild.utils.compat import iterkeys
 
@@ -365,7 +365,7 @@ class GitBranch(Branch):
         proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
                                 cwd=self.get_checkoutdir(),
                                 env=get_git_extra_env())
-        stdout = proc.communicate()[0]
+        stdout = udecode(proc.communicate()[0])
         if not stdout.strip():
             raise CommandError(_('Command %s returned no output') % cmd_desc)
         for line in stdout.splitlines():