Added pipe.ok.

diff --git a/dlls/kernel/tests/.cvsignore b/dlls/kernel/tests/.cvsignore
index d00a270..56a57cf 100644
--- a/dlls/kernel/tests/.cvsignore
+++ b/dlls/kernel/tests/.cvsignore
@@ -11,6 +11,7 @@
 kernel32_test.exe.spec.c
 locale.ok
 path.ok
+pipe.ok
 process.ok
 testlist.c
 thread.ok