[PATCH 1/4] make_absolute_path(): Do not append redundant slash

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

make_absolute_path("foo") at root returns "//foo". This patch makes it
return "/foo" correctly.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 .. so that "git init" will show "initialized empty Git in /.git"

 abspath.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/abspath.c b/abspath.c
index b88122c..e72aede 100644
--- a/abspath.c
+++ b/abspath.c
@@ -54,8 +54,9 @@ const char *make_absolute_path(const char *path)
 			if (len + strlen(last_elem) + 2 > PATH_MAX)
 				die ("Too long path name: '%s/%s'",
 						buf, last_elem);
-			buf[len] = '/';
-			strcpy(buf + len + 1, last_elem);
+			if (*buf != '/' || buf[1] != '\0')
+				buf[len++] = '/';
+			strcpy(buf + len, last_elem);
 			free(last_elem);
 			last_elem = NULL;
 		}
-- 
1.7.0.rc2.182.g3adef