[PATCH][btrfs-next] Btrfs: extent map selftest: fix non-ANSI btrfs_test_extent_map declaration

[Colin King]

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

The function btrfs_test_extent_map requires a void argument to be ANSI C
compliant and so it matches the prototype in fs/btrfs/tests/btrfs-tests.h

Cleans up sparse warning:
fs/btrfs/tests/extent-map-tests.c:346:27: warning: non-ANSI function
declaration of function 'btrfs_test_extent_map'

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
 fs/btrfs/tests/extent-map-tests.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/tests/extent-map-tests.c b/fs/btrfs/tests/extent-map-tests.c
index 70c993f01670..c23bd00bdd92 100644
--- a/fs/btrfs/tests/extent-map-tests.c
+++ b/fs/btrfs/tests/extent-map-tests.c
@@ -343,7 +343,7 @@ static void test_case_4(struct extent_map_tree *em_tree)
 	__test_case_4(em_tree, SZ_4K);
 }
 
-int btrfs_test_extent_map()
+int btrfs_test_extent_map(void)
 {
 	struct extent_map_tree *em_tree;
 
-- 
2.15.1