fix test-permissions output

tests/test-permissions

@@ -1,17 +1,17 b''
 #!/bin/sh
 
 hg init t
 cd t
 echo foo > a
 hg add a
 hg commit -m "1" -d "1000000 0"
 hg verify
 chmod -r .hg/store/data/a.i
 hg verify 2>/dev/null || echo verify failed
 chmod +r .hg/store/data/a.i
 hg verify 2>/dev/null || echo verify failed
 chmod -w .hg/store/data/a.i
 echo barber > a
 hg commit -m "2" -d "1000000 0" 2>/dev/null || echo commit failed
 chmod -w ../t
-hg diff
+hg diff --nodates

tests/test-permissions.out

@@ -1,16 +1,22 b''
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 verify failed
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions
 commit failed
+diff -r c1fab96507ef a
+--- a/a
++++ b/a
+@@ -1,1 +1,1 @@ foo
+-foo
++barber