[PATCH] btrfs-progs: Makefile: Also clean test results

[Qu Wenruo <wqu@xxxxxxxx>]

This makes greping a lot easier.

Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
 Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Makefile b/Makefile
index e25e256f96af..9cefd70d2bd6 100644
--- a/Makefile
+++ b/Makefile
@@ -628,6 +628,7 @@ clean: $(CLEANDIRS)
 		mkfs/*.o mkfs/*.o.d check/*.o check/*.o.d \
 	      ioctl-test quick-test library-test library-test-static \
               mktables btrfs.static mkfs.btrfs.static fssum \
+	      tests/*-results.txt \
 	      $(check_defs) \
 	      $(libs) $(lib_links) \
 	      $(progs_static) \
-- 
2.21.0