[PATCH] Regression fix: Make section-from-path=-1 work again

[plenz at cis.fu-berlin.de (Julius Plenz)]

This fixes a regression introduced in commit fb3655df, "use struct
strbuf instead of static buffers":

> The pattern there is to append the filename, use it and then reset
> the buffer to its original length (retaining a trailing '/').

This makes the "count slashes from end of string" fail. My workaround is
to start counting only before the trailing slash.

Signed-off-by: Julius Plenz <plenz at cis.fu-berlin.de>
---
 scan-tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scan-tree.c b/scan-tree.c
index beb584b..53f949b 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -158,7 +158,7 @@ static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
 			while (slash && n && (slash = strchr(slash, '/')))
 				n--;
 		} else {
-			slash = rel.buf + rel.len;
+			slash = rel.buf + rel.len - 2;
 			while (slash && n && (slash = xstrrchr(rel.buf, slash, '/')))
 				n++;
 		}
-- 
1.8.2.1-zedat