[PATCH] MAINTAINERS: rectify radix-tree testing entry in XARRAY

[Lukas Bulwahn <lukas.bulwahn@gmail.com>]

The initial commit 3d5bd6e1a04a ("xarray: Add MAINTAINERS entry")
missed a trailing slash to include all files and subdirectory files.
Hence, all files in tools/testing/radix-tree were not part of XARRAY,
but were considered to be part of "THE REST".

Rectify this to ensure patches reach the actual maintainer.

This was identified with a small script that finds all files only
belonging to "THE REST" according to the current MAINTAINERS file, and I
acted upon its output.

Fixes: 3d5bd6e1a04a ("xarray: Add MAINTAINERS entry")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
Matthew, please pick this small fixup patch.

applies cleanly on current master and next-20200131

 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 1f77fb8cdde3..4ebcc2f09028 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18198,7 +18198,7 @@ F:	lib/idr.c
 F:	lib/xarray.c
 F:	include/linux/idr.h
 F:	include/linux/xarray.h
-F:	tools/testing/radix-tree
+F:	tools/testing/radix-tree/
 
 XBOX DVD IR REMOTE
 M:	Benjamin Valentin <benpicco@googlemail.com>
-- 
2.17.1