[RFC PATCH 2/3] home_config_path: allow NULL xdg parameter

[Matthieu Moy <Matthieu.Moy@imag.fr>]

This allows a caller to requst the global config file without requesting
the XDG one.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
This is actually not needed, but I wrote this for a previous version,
and it seems sensible anyway.

 path.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/path.c b/path.c
index 3afcdb4..f68df0c 100644
--- a/path.c
+++ b/path.c
@@ -148,10 +148,12 @@ void home_config_paths(char **global, char **xdg, char *file)
 			*global = mkpathdup("%s/.gitconfig", home);
 	}
 
-	if (!xdg_home)
-		*xdg = NULL;
-	else
-		*xdg = mkpathdup("%s/git/%s", xdg_home, file);
+	if (xdg) {
+		if (!xdg_home)
+			*xdg = NULL;
+		else
+			*xdg = mkpathdup("%s/git/%s", xdg_home, file);
+	}
 
 	free(to_free);
 }
-- 
2.0.2.737.gfb43bde