[PATCH 1/7] init: plug tiny one-time memory leak

[Jonathan Nieder <jrnieder@gmail.com>]

The buffer used to construct paths like ".git/objects/info" and
".git/objects/pack" is allocated on the heap and never freed.

So free it.  While at it, factor out the relevant code into its own
function to make it more obvious that this data is not used elsewhere.

Noticed by valgrind while setting up tests (in test-lib).

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 builtin/init-db.c |   32 +++++++++++++++++++-------------
 1 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/builtin/init-db.c b/builtin/init-db.c
index 0271285..a9c54ea 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -294,11 +294,26 @@ static int create_default_files(const char *template_path)
 	return reinit;
 }
 
+static void create_sha1_dir(void)
+{
+	const char *sha1_dir = get_object_directory();
+	int len = strlen(sha1_dir);
+	char *path = xmalloc(len + 40);
+
+	memcpy(path, sha1_dir, len);
+
+	safe_create_dir(sha1_dir, 1);
+	strcpy(path+len, "/pack");
+	safe_create_dir(path, 1);
+	strcpy(path+len, "/info");
+	safe_create_dir(path, 1);
+
+	free(path);
+}
+
 int init_db(const char *template_dir, unsigned int flags)
 {
-	const char *sha1_dir;
-	char *path;
-	int len, reinit;
+	int reinit;
 
 	safe_create_dir(get_git_dir(), 0);
 
@@ -313,16 +328,7 @@ int init_db(const char *template_dir, unsigned int flags)
 
 	reinit = create_default_files(template_dir);
 
-	sha1_dir = get_object_directory();
-	len = strlen(sha1_dir);
-	path = xmalloc(len + 40);
-	memcpy(path, sha1_dir, len);
-
-	safe_create_dir(sha1_dir, 1);
-	strcpy(path+len, "/pack");
-	safe_create_dir(path, 1);
-	strcpy(path+len, "/info");
-	safe_create_dir(path, 1);
+	create_sha1_dir();
 
 	if (shared_repository) {
 		char buf[10];
-- 
1.7.2.3