-perm: Use +t instead of ug+t

The chmod spec says that ug+t is unspecified, and only +t or a+t is
guaranteed to actually set the sticky bit.  In practice GNU tools
respect o+t as well, but ignore u+t/g+t.

Fix the implementation to match GNU, and only test the POSIX required
parse.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests.sh b/tests.sh
index 0e1a964..8ec983f 100755
--- a/tests.sh
+++ b/tests.sh
@@ -1762,7 +1762,7 @@ function test_perm_setid() {
 }
 
 function test_perm_sticky() {
-    bfs_diff rainbow -perm /ug+t
+    bfs_diff rainbow -perm /+t
 }
 
 function test_prune() {